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3. Y ,] hu $ 0 . & | & r r r r I. Personal DataName: Avinash G. Patwardhan, Ph.D.Address: 2273 Durham Drive Wheaton, IL 60187Phone: (708) 202-5804 (Office) (630) 462-1228 (Home)E-mail: HYPERLINK mailto:apatwar@orion.it.luc.edu apatwar@luc.eduFax: (708) 202-7938II. Education B.S. 1972 Mechanical Engineering Nagpur University Nagpur, India M.S. 1974 Mechanical Engineering Indian Institute of Science Bangalore, India Ph.D. 1980 Mechanical Engineering Oklahoma State University Stillwater, OklahomaIII. Postdoctoral TrainingPost-Doctoral 1980 Biomechanics Oklahoma State UniversityFellow Stillwater, OklahomaIV. Academic Appointments & Professional ExperienceDirector, Rehabilitation Research and Development SectionMusculoskeletal V. A. Hospital, Hines, Illinois 60141Biomechanics Lab. Research in biomechanics of the human musculoskeletalsystem,June 1980-Present Responsible for the development and planning of theresearch programin the Musculoskeletal Biomechanics Research Laboratory, Management ofresearch resources and collaborative research activities involvingfaculty and students from multiple academic institutions.Professor Department of Orthopaedic Surgery and RehabilitationJuly 1992-Present Loyola University Medical Center 2160 South First Avenue, Maywood, Illinois 60153 Research in biomechanics of the spine and spinal deformities, Resident instruction in biomechanics, Identifying and establishing research priority areas, Identifying and soliciting possiblefunding sources, Managing and conducting research projectsAssociate Professor Department of Orthopaedic Surgery andRehabilitationJuly 1986-June 1992 Loyola University Medical Center 2160 South First Avenue, Maywood, Illinois 60153

4. Assistant Professor Department of Orthopaedic Surgery andRehabilitationJune 1980-June 1986 Loyola University Medical Center 2160 South First Avenue, Maywood, Illinois 60153Adjunct Professor Department of Mechanical and Aerospace EngineeringJan. 1989-Present Illinois Institute of Technology, Chicago, Illinois60616 Participation in graduate research program, Thesis advisor toMasters and Ph.D. students in the Department of Mechanical EngineeringAdjunct Professor Bioengineering DepartmentJan. 1985-Present University of Illinois at Chicago, Chicago, Illinois Graduate and undergraduate instruction in biomechanics of human musculoskeletal system, Thesis advisor to Masters and Ph.D.studentsAdjunct Faculty Northwestern University Prosthetics and Orthotics CenterSept. 1987-Present Northwestern University Medical School, Chicago,IL 60611 Instruction in biomechanics of spine and spinal orthoses tostudents in the Graduate Certificate Program in OrthoticsResearch Fellow Orthopaedic and Spine Center (OSC), Hinsdale Hospital,Hinsdale ILApril 1991-PresentPart-Time Department of Mechanical and Aerospace EngineeringInstructor Illinois Institute of Technology, Chicago, Illinois 60616Aug. 1981-May 1984 Undergraduate and graduate instruction inkinematics and dynamics of machines, methods of computer aided design and optimizationResearch Assistant Department of Mechanical and Aerospace EngineeringAug. 1978-Sept. 1979 Oklahoma State University, Stillwater, Oklahoma74074 Research in kinematic analysis and simulation studies of the human spine, Development of electrogoniometer instrumentation for three- dimensional motion measurements at spinal segmentsTeaching Assistant Department of Mechanical and Aerospace EngineeringAug. 1974-July 1978 Oklahoma State University, Stillwater, Oklahoma74074 Undergraduate and graduate instruction in kinematic analysis and design of linkages and mechanisms, statics, dynamics, numerical methods for engineering analysisV. Certificates, Professional

5. Orthopaedic Implants - Effective and Emerging Manufacturing and MaterialTechnology. Sponsored by the Society of Manufacturing Engineers,December 8-10, 1987, Schaumburg, ILVI. Professional AffiliationsOrthopaedic Research Society - MemberInternational Society for the Study of the Lumbar Spine MemberAmerican Society of Mechanical Engineers - Fellow - Executive Committee Member (1997-2000), Bioengineering Division,American Society of Mechanical Engineers (ASME), Member-In-Charge of alltechnical committees. - Chair (1996-1997), Solid Mechanics Committee, BioengineeringDivision, American Society of Mechanical Engineers (ASME): Planning andorganizing biomechanics sessions and special symposia at the ASME WinterAnnual Meetings and Summer Bioengineering Conferences. - Secretary (1993-1995), Solid Mechanics Committee, BioengineeringDivision, American Society of Mechanical Engineers (ASME): Planning andorganizing biomechanics sessions and special symposia at the ASME WinterAnnual Meetings and Summer Bioengineering Conferences.VII. Other Professional ActivitiesReviewer:Spine (Associate Editorial Board member)Annals of Biomedical EngineeringClinical Orthopaedics and Related ResearchCRC Press, Boca Raton, FloridaClinical Orthopaedics and Related ResearchIEEE Transactions on Rehabilitation Engineering (Associate EditorialBoard member)Journal of Biomechanical EngineeringJournal of BiomechanicsJournal of Bone and Mineral ResearchJournal of Orthopaedic ResearchJournal of Prosthetics and Orthotics (Associate Editorial Board member)Journal of Rehabilitation Research and DevelopmentExtramural Reviewer:National Institutes of Health NIAMS Special Emphasis Panel (CenterGrant Review), 1/99Bioengineering Alliance of South Carolina Louisiana Education Quality Support Fund R&D Program Department of Veterans Affairs, Rehab Research and DevelopmentService American Institute for Biological Sciences British Columbia Health Research Foundation, B.C., Canada Health Care & Promotion Fund Committee of Hong KongExternal evaluator for Tenure, Promotion and Reappointment: Department of Industrial and Systems Engineering, Ohio StateUniversity, Columbus, Ohio Department of Bioengineering, ClemsonUniversity, Clemson, South Carolina Department of Mechanical Engineering, University of Utah, Salt LakeCity, UtahDepartment of Microbiology and Immunology, FUHS/The Chicago MedicalSchool, North Chicago, Illinois

6. Department of Mechanical, Materials, and Aerospace Engineering, IllinoisInstitute of Technology, Chicago, IllinoisDepartment of Mechanical Engineering, Wayne State University, Detroit,MichiganSchool of Biomedical Engineering, University of Tennessee, Memphis,TennesseeNorth American Spine Society Annual Conference Program Reviewer(1997,1998)Committees:Member (1992-Present), Scientific Review Subcommittee, RehabilitationResearch and Development Section, Hines VA Hospital, Hines, IL.Member, Research Committee, Department of Orthopaedic Surgery andRehabilitation, Loyola University Chicago, Maywood, IL.Appointments:Session Chairman: Fifth International Conference on RehabilitationEngineering, 1981 ASME Winter Annual Meeting, 81, 86, 87, 89, 91, 92, 93, 95, 96, 97,98 International Society for Prosthetics and Orthotics, July 1992 Orthopaedic Research Society Annual Meeting, 1993 Summer Bioengineering Conference, 1993, 95, 97, 99 Orthopaedic Research Society, 1996 International Society for the Study of the Lumbar Spine, 1997 North American Spine Society Meeting, 1997Other:Represented Loyola University and Hines Rehab R&D Center at DuPageEngineers Week Program, February 1988, 1989Participated as a mentor, Student Mentorship Volunteer Program offered byLoyola University to the students of the Illinois Mathematics and Science Academy,Aurora, Illinois, 1988-1990Participated as a mentor, LUMC Summer Science Enrichment Program, 1991,1996Participated as a mentor, Hines Science Student Program, 1996-2000VIII. Professional Awards and HonorsAcademic Excellence Award, awarded by the Residence Halls Association,Oklahoma State University, Stillwater, Oklahoma, 1976, 1977, 1978Award of Merit for authorship of a prize winning technical paper at theFifth Applied Mechanisms Conference, Nov. 1977, Oklahoma City, awarded bythe Procter and Gamble Co.Member of the Honor Society of Phi Kappa Phi, elected May 1980, OklahomaState University1982 Volvo Award on Low Back Pain Research - Biomechanics category,Awarded by the International Society for the Study of the Lumbar Spinefor a submitted scientific paper

7. Award of Excellence, Presented by the Illinois Mathematics and ScienceAcademy in recognition of the commitment to the standards of academicexcellence that foster student achievement and success, June 1989Certificate of Appreciation, Presented by American Academy of Orthotistsand Prosthetists for scientific contributions and commitment to theadvancement of the profession, February 1990Certificate of Appreciation, Presented by the Illinois Mathematics andScience Academy in recognition of service to the Student MentorshipProgram, 1989-1990First Place Award, Resident Research Paper Competition, awarded by theAmerican Society for the Surgery of the Hand, November 1992, Co-authorSecond place award, Residency Trauma Paper Competition of the ChicagoCommittee on Trauma of the American College of Surgeons, December 1992,Co-authorAppointed to the Advisory Board of SPINE, 1993Appointed as an Assistant Editor, IEEE Transactions on RehabilitationEngineering, 1993Honorary member-American Academy of Orthotists and Prosthetists, MidwestChapter, elected 1993, in recognition of teaching and research in thefield of orthotics and prostheticsFirst-place winner of the Journal of Prosthetics and Orthotics Articleof the Year competition-1993, Co-authorFirst Place Journal Award for excellence in medical writing, AmericanCollege of Foot and Ankle Surgeons, Presented at the 1995 AnnualScientific Seminar, Co-authorAppointed to the Scientific Review Panel (Multidisciplinary SpecialEmphasis Panel, SSS-8(1)) to review Small Business Innovation Research(SBIR) Grant applications, National Institutes of Health, March 1995,November 1995Performance Award for significantly contributing to the mission of theDepartment by substantially exceeding performance requirements. Awardedby the Department of Veterans Affairs, 95, 96, 97Second-place winner of the Journal of Prosthetics and Orthoticss Articleof the Year competition- 1996, Lead authorMember of the Editorial Board of Journal of Prosthetics and Orthotics,1996-Present.First-place winner of the Danek Poster Award, International Society forthe Study of the Lumbar Spine, 24th Annual Meeting, June 2-6, 1997,Singapore, Co-author

8. First-place winner of the OREF Illinois Orthopaedic Resident ResearchSymposium Paper Award, April 17, 1998, Co-authorElected to the grade of Fellow in the American Society of MechanicalEngineers for outstanding contribution and service to the profession,December 1998.Poster Award, American College of Foot and Ankle Surgeons, February,1998, Co-authorAppointed to the NIH NIAMS Special Emphasis Panel, January 1999First Place Poster Award, American College of Foot and Ankle Surgeons,February 1999, Co-authorElected Fellow of the American Academy of Orthotists and Prosthetists,December 1999IX. Major Reasearch InterestsBiomechanics of the Spine and Spinal Deformities, MusculoskeletalRehabilitationX. Currently-Funded Research GrantsProject Title: Effect of Spinal Implants on the Response of the LumbarSpine Under In Vivo Compressive LoadsRole: Principal Investigator (20%)Granting Agency: Veterans AdministrationTotal Amount: $409,600Project Period of Award: October 1998-September 2001Project Title: Promotion of Functional Recovery Following Spinal CordInjury REAP ApplicationRole: One of Four Qualifying Investigators (10%)Granting Agency: Veterans AdministrationTotal Amount: $1,250,000Project Period of Award: October 1998-September 2003Project Title: Chiropractic vs. Medical Care for Chronic Neck PainRole: Co-Investigator (10%)Granting Agency: PHS-Health Resources and Services AdministrationTotal Amount: $1,250,000Project Period of Award: October 2000-September 2003XI. Previously-Funded Research GrantsProject Title: Flexion-Distraction vs. Medical Treatment for Low BackPainRole: Co-Investigator (10%)Granting Agency: PHS-Health Resources and Services Administration (2R18AH1301-4)Total Amount: $443,661Project Period of Award: October 1997-September 2000

9. Project Title: Effect of the Type of Annular Incision on thePostoperative Stability a Herniated Lumbar DiscRole: Principal Investigator (10%)Granting Agency: Veterans AdministrationTotal Amount: $76,400Project Period of Award: April 1998-March 1999Project Title: Compliance Monitor to Measure Patient Wearing-Time forSpinal OrthosisRole: Principal Investigator (10%)Granting Agency: Veterans AdministrationTotal Amount: $201,800Project Period of Award: October 1995-September 1998Project Title: Gene Therapy to Reverse Bone Loss in OIRole: Co-Investigator (10%)Granting Agency: Childrens Brittle Bone FoundationTotal Amount: $50,000Project Period of Award: July 1997-June 1998Project Title: Effect of Surgical Procedures on the Stability of theLumbar Motion SegmentRole: Principal Investigator (25%)Granting Agency: Veterans AdministrationTotal Amount: $330,888Project Period of Award: October 1994-September 1997Project Title: Biomechanics of Low Back Flexion-Distraction TherapyRole: Co-Investigator (10%)Granting Agency: PHS-Health Resources and Services Administration (1R18AH10001-01A1)Total Amount: $316,167Project Period of Award: October 1994-September 1997Project Title: Thin-Film Peripheral Nerve ElectrodeRole: Co-Investigator (5%)Granting Agency: NIH SBIR GrantTotal Amount: $10,000Project Period of Award: October 1993-September 1995Project Title: Optimum Rigidity of a Spinal Implant for Lumbar Fusions-APilot StudyRole: Co-Principal Investigator (20%)Granting Agency: Veterans AdministrationTotal Amount: $48,300Project Period of Award: October 1992-September 1993Project Title: Biomechanics of Cervical Diagnostic Maneuvers- A PilotStudyRole: Co-Principal Investigator (20%)Granting Agency: Veterans AdministrationTotal Amount: $48,495Project Period of Award: October 1992-September 1993

10. Project Title: Orthotic Stabilization of Fractures of the Thoracic andLumbar SpineRole: Principal Investigator (30%)Granting Agency: Veterans AdministrationTotal Amount: $383,800Project Period of Award: January 1989 to December 1991Project Title: In Vitro Comparison of Instrumentation Systems for BurstFracture StabilizationRole: Principal Investigator (20%)Granting Agency: AcroMed CorporationTotal Amount: $16,000Project Period of Award: August 1990 to July 1991Project Title: Articular Contact Characteristics of the Ankle andChoparts JointsRole: Co-Investigator (10%)Granting Agency: American Podiatric Medical AssociationTotal Amount: $23,206Project Period of Award: June 1990 to May 1991Project Title: Load Bearing Characteristics of the Wrist FollowingIntercarpal ArthrodesisRole: Co-Investigator (10%)Granting Agency: Veterans AdministrationTotal Amount: $39,700Project Period of Award: October 1988 - September 1989Project Title: Treatment of Variable Partial Flexor Tendon LacerationsRole: Co-Investigator (10%)Granting Agency: Veterans AdministrationTotal Amount: $81,000Project Period of Award: October 1988 - September 1989Project Title: Weight Distribution in the Foot Before and After Surgicaland Orthotic Intervention for Hallux RigidusRole: Co-Investigator (20%)Granting Agency: Langer Biomechanics Group, Inc,Total Amount: Electrodynagraphy equipment and software ($20,000)Project Period of Award: October 1985 to September 1988Project Title: Load Bearing Characteristics of the Normal Wrist and theChanges in the Load Bearing Characteristics with Scaphoid InstabilityRole: Co- Investigator (10%)Granting Agency: Orthopaedic Research and Education FoundationTotal Amount: $18,750Project Period of Award: March 1987 - March 1988Project Title: Mechanical Stability of a New Anterior Construct forSegmental FusionRole: Principal Investigator (20%)Granting Agency: HowmedicaTotal Amount: $58,080Project Period of Award: May 1986 to December 1987

11. Project Title: Effects of Low Back Pain Treatment Modalities on LumbarFacet LoadingRole: Principal Investigator (30%)Granting Agency: Veterans AdministrationTotal Amount: $180,714Project Period of Award: October 1984 to September 1986Project Title: Effect of Chymopapain Injection, Laminectomy andDiscectomy on Load Bearing Characteristics of Lumbar Facet Joints (20%)Role: Principal InvestigatorGranting Agency: Arthritis FoundationTotal Amount: $ 10,000Project Period of Award: March 1984 to August 1985Project Title: Biomechanical Study of Spinal Fusion and its Effect onAdjacent SegmentsRole: Principal Investigator (50%)Granting Agency: Veterans AdministrationTotal Amount: $ 382,214Project Period of Award: April 1982 to March 1985XII. Graduate Students and Postdoctoral Fellows SupervisedA. Graduate Students in Engineering Ph.D. Dissertations: Siping Li: "Response of Human Intervertebral Discs to ProlongedLoading and Low- Frequency Vibration in Axial Compression" Department of Mechanical Engineering, University of Illinois atChicago Co-advisor with Dr. Farid Amirouche, Degree Awarded: May 1994 Lars Gilbertson: "Orthotic Stabilization of ThoracolumbarFractures" Department of Biomedical Engineering, University of Iowa, Iowa City Co-advisor with Dr. Vijay Goel, Degree Awarded: August 1993 Mete Alpan, "Mechanics of Vertebral Fracture in SpinalOsteoporosis" Department of Mechanical and Aerospace Engineering, IllinoisInstitute of Technology Co-advisor with Dr. Kevin Meade, Degree Awarded: May 1992 Master of Science Theses: Biomechanical Investigation of Isthmic Spondylolisthesis James Simonds, Bioengineering Department, University of Illinois atChicago Advisor, M.S. Thesis in Progress Response of the Human Lumbar Spine to a Compressive Follower Pre-Load Gerard Carrandang, Bioengineering Department, University ofIllinois at Chicago

12. Advisor, Degree Awarded: June 2000 Effect of Surgical Procedures on the Stability of the LumbarMotion Segment Jarret Millar, Bioengineering Department, University of Illinois atChicago Co-Advisor, Degree Awarded: December 1998 Stability of the Lumbar Spine Subjected to a Follower Load Brian Lee, Bioengineering Department, University of Illinois atChicago Advisor, Degree Awarded: August 1998 Effect of Facetectomy on the Stability of the Lumbar MotionSegment Sudheer Paruchuri, Bioengineering Department, University ofIllinois at Chicago Co-Advisor, Degree Awarded: December 1997 Geometric and Finite Element Analysis of Curve Correction inIdiopathic Scoliosis Aruna Rimkus, Bioengineering Department, University of Illinois atChicago Advisor, Degree Awarded: June 1996 Viscoelastic Properties of Lumbar Spine Segments in Shear Julie Bunag, Department of Mechanical Engineering University of Illinois at Chicago, Degree Awarded: June 1995 Co-advisor with Dr. Farid M. L. Amirouche Biomechanical Analysis of Loads on the Fifth Lumbar Vertebra:Implications to Spondylolysis Virginie Reyx, Department of Mechanical & Aerospace Engineering Illinois Institute of Technology, Degree Awarded: May 1990 Co-advisor with Dr. Kevin Meade A Comparative Analysis of the Kinetic Characteristics of CamSystems" Brent Nowak, Department of Mechanical & Aerospace Engineering Illinois Institute of Technology, Degree awarded: December, 1989 Co-advisor with Dr. Kevin Meade "A Biomechanical Study of Orthotic Stabilization of SpinalInjuries" Siping Li, Department of Mechanical & Aerospace Engineering Illinois Institute of Technology, Degree awarded: December, 1988 Co-Advisor with Dr. Kevin Meade "A Three-Dimensional Finite Element Model of Spinal Correction" Michael Daniele, Department of Mechanical & Aerospace Engineering Illinois Institute of Technology, Degree awarded: June, 1983 Co-Advisor with Dr. Ray Vanderby

13. "Ligament Forces and Joint Motion in the Human Knee: AnExperimental In Vitro Analysis Using Buckle Transducers and A Six Degree-Of-FreedomElectrogoniometer" Gary E. Behler, Program of Theoretical and Applied Mechanics,College of Engineering Northwestern University, Degree Awarded: June, 1983 Co-Advisor with Dr. Jack LewisB. Post-Doctoral Research Fellows: Kazuaki Katagiri, M.S., Hokkaido University, Sapporo, Japan,October 1996-June 1997 "Response of Intervertebral Discs to Shear, Compression andCombined Loading" "Lumbar Intradiscal Pressures under Prolonged and Cyclic Loading" Shinji Umehara, M.D., April 1994-May 1996 "Effect of Malalignment in the Instrumented Lumbar Fusion onAdjacent Segments" "Biomechanical and Histological Effects of an Oversized PedicleScrew" Sekhar Sompalli, M.D., July 1994-June 1995 "Stabilization of Type II Sacral Fracture with Pubic SymphysisDisruption" Tae-Hong Lim, Ph.D., 1990-1992 "Viscoelastic Properties of Intervertebral Disc" Sangilimuthu Chandran, M.D., 1989-1991 "Mechanics of Vertebral Fractures in Spinal Osteoporosis"C. Graduate Student in School of Dentistry "Force Measurements During Extrusive Tooth Movements" Maria Haas, Masters Thesis. Degree Awarded: August 1993. (Co-advisor with Dr. Lewis Klapper), Department of Orthodontics, LoyolaUniversity School of DentistryD. Residents in Orthopaedics (Research Rotation)Kevin Tu, M.D., July-December 2000 Effect of Vertebroplasty on the Biomechanics of the ThoracicSpineChris Giannoulias, M.D., July-December 2000 Effect of Cement Pressurization on the Stability of the GlenoidComponent in Shoulder ArthrplastyOmar Darr, M.D., January-June 2000 Biomechanical Comparison of Cofield, Biomet and Kirschner ShoulderProsthesesWalter Stanwood, M.D., July-December 1999 Effect of Anterior Glenoid Deficiency on Gleno-Humeral Stability

14. Eugene Chang, M.D., July-December 1999 Effect of Cavitary Defects on the Stability of the CementedGlenoid ProsthesisRenato Bosita, M.D., January-June 1999 Assessment of Pull-Out Strength after Deltoid-to-Triceps TendonTransfer Augmented with DacronBrian Lohrbach, M.D., January-June 1999 Optimal Placement of Dall-Miles Cables in Cable and Plate Fixationof Periprosthetic Femoral FracturesMichelle Wolcott, M.D., July-December 1998 Biomechanical Evaluation of the Medial Collateral Ligament AfterMedial EpicondylectomyHaagen Diener, M.D., July-December 1998 Response of the Intact and Surgically Altered Cervical Spine Undera Follower LoadMichael Forseth, M.D., January-June 1998 Effect of Thumb Carpometacarpal Joint Position on Lateral PinchForce in TetraplegiaJune Eguro, M.D., April-June 1998 Effect of Distal Radial Malunion on Forearm RotationPeter Parten, M.D., October 1997-March 1998 A Model of Hydrostatic Loads Within Cervical Interbody FusionCagesSekhar Sompalli, M.D., July-December 1997 Supracondylar Femur Fractures in Total Knee ArthroplastyJeff Chase, M.D., January-June 1997 Effect of Localized Growth Hormone on Biomechanical Properties andTissue Characteristics in oim Mouse VertebraeSam Bourn, M.D., July-December 1996 "Analysis of Hydrostatic Forces Within Intervertebral Fusion Cages"Brian Steinke, M.D., July-December 1996 "Effect of hGH Transgene Expression on the Structural Properties ofMouse Vertebrae"Michael Sacco, M.D., January-June 1996 "Effect of Sagittal Alignment on the Strength of Anterior PlateFixation in the Cervical Spine"Eric Monesmith, M.D., January-June 1996 "Restoration of Quadriceps Moment Arm in Post-Patellectomy TotalKnee Arthroplasty"Derek Reinke, M.D., July-December 1995

15. "Patellofemoral Joint Pressures After ACL Reconstruction"Marc Zussman, M.D., July-December 1995 "Strategy to Improve Bone Quality in Osteogenesis Imperfecta"Patricia Griffith, M.D., January-June 1995 "Patellofemoral Contact Pressures After ACL Graft Harvest"Jeff Chase, M.D., November 1994-March 1995 "Effect of Cervical Flexion and Traction on Cervical ForaminalSpace"Guido Marra, M.D., July-December 1994 "Bone Graft Growth Potential: Relationship to Periosteal Integrity"Herb Bote, M.D., July-December 1994 "Effect of BFGF on Meniscal Wound Repair, Receptor Expression andBiomechanical Strength"Joseph Tobin, M.D., January-June 1994 "Diagnosis of Depressed Lateral Tibial Plateau Fractures Using 2-Dand 3-D Reconstructions in a Cadaveric Model"John Andreshak, M.D., January-June 1994 "Effect of Basic Fibroblast Growth Factor on Fracture Healing inthe Rat"Craig Humphreys, M.D., July-December 1993 Extraperiosteal, Phalangeal Bone Graft Ravascularization andTritiated Proline Uptake in Growing Rabbits at Different AgesSteve Sokolosky, M.D., July-December 1993 "Stability of PIP Fracture Dislocations"John Schuster, M.D., July-December 1993 "Fixation of Tibial Plateau Fractures"Mike Cohen, M.D., January-June 1993 "Stability of PIP Fracture Dislocations"Craig Humphreys, M.D., January-June 1993 "The Growth Potential of Extraperiosteal, Phalangeal Bone Grafts inRabbits"Herb Bote, M.D., October 1992-March 1993 "Development of a laboratory model for studies of scoliosiscorrection" "Effect of pedicular screw triangulation on pull out strength"Van Stamos, M.D., July 1992-December 1992 "Micromotion at the acetabular cup-bone interface"John Pak, M.D., January 1992-June 1992

16. "Effect of levodopa and growth hormone on fracture healing- A ratmodel"Richard Rabinowitz, M.D., July 1991-December 1991 "Role of Interosseous Membrane in Forearm Stability"Sean McCallum, M.D., July 1991-December 1991 "A Comparison of Insertion Stresses Generated by TibialIntramedulary Nails"Paul Slosar, M.D., January 1991-June 1991 "In Vitro Comparison of Instrumentation Systems for Burst FractureStabilization"Warren Jablonsky, M.D., January 1991-June 1991 "Torsional Stability of Femoral Stems in Revision Hip Arthroplasty"David Mehl, M.D., July 1990 - December 1990 "Micromotion of the Tibial Component Augmented with Modular Wedges"Paul Perona, M.D., July 1990 - December 1990 "Acetabular Micromotion as a Measure of Initial Implant Stability-A Comparison of Cementless Components"Blain Farless, M.D., January 1990 - June 1990 "Micromotion of the Tibial Component in the Presence of Medial BoneDefect- A Biomechanical Comparison of Methods of Augmentation"Jeff Lawrence, M.D., July 1989 - December 1989 "Acetabular Micromotion as a Measure of Initial Implant Stability"Robert Nixon, M.D., July 1989 - December 1989 "Biomechanical Study of Burst Fracture Stabilization"Paul Miller, M.D., January 1989 - June 1989 "Load Bearing Characteristics of the Wrist Following SelectiveIntercarpal Fusions"Scot Seymour, M.D., January 1989 - June 1989 "Experimental Simulation of Burst Fractures of the Spine"Julie Wehner, M.D., January 1988 - June 1988 "Load Bearing Characteristics of the Wrist Following SelectiveIntercarpal Fusions"Alexander Blevens, M.D., July 1987 - December 1987 "Load Bearing Characteristics of the Wrist Following SimulatedLigamentous Instability"Thomas Woo, M.D., January 1987 - June 1987 "Load Bearing Characteristics of the Wrist Following SimulatedScaphoid Fracture"

17. D. Smith, M.D., July 1986 - December 1986 "Load Bearing Characteristics of the Normal Wrist"Dan Daluga, M.D., January 1986 - June 1986 "Mechanical Stability of a New Anterior Construct for SegmentalSpinal Fusion"David Apel, M.D., July 1985 - December 1985 "Biomechanical Studies of Unstable Intertrochanteric Fractures ofthe Femur"David Kraker, M.D., January 1985 - June 1985 "Effects of Low Back Pain Treatment Modalities on Biomechanics ofAdjacent Segments"Tom Hitchcock, M.D., July 1984 - December 1984 "Effects of Immediate Controlled Mobilization on the Strength ofFlexor Tendon Repairs"Brad Larson, M.D., July 1984 - December 1984 "Role of Gore-Tex Expanded PTFE Suture in Knee Ligament Repair: ACanine Model"Ken Schiffman, M.D., January 1984 - June 1984 "Biomechanical Studies of Spinal Segments with Spina BifidaOcculta"Gail Hopkins, M.D., January 1984 - June 1984 "Biomechanics of the Ankle Joint"Jeffrey Behr, M.D., July 1983 - December 1983 "Gore-Tex Augmented Patellar Tendon Repairs in a Canine Model"Eric Orenstein, M.D., July 1982 - December 1982 "Effects of Chymopapain Injection and Discectomy on Lumbar FacetLoads"Sam Chmell, M.D., January 1982 - June 1982 "Three-Dimensional Orientation of Cervical Spine Facets"Mike Zindrick, M.D., July 1981- December 1981 "Effects of Fibular Malunion on Biomechanics of the Ankle Joint"Mark Lorenz, M.D., July 1981- December 1981 "Load Bearing Characteristics of Lumbar Facet Joints"E. Podiatry ResidentsMark Leonard, D.P.M. Podiatric Surgical Resident, 2/2000-6/2000 Comparison of Absorbable vs. Synthes Screws for the FifthMetatarsalLynn Mahoney, D.P.M. Podiatric Surgical Resident, 1/2000-5/2000

18. Comparison of Titanium Screw vs. Bone Screw in 2nd MetatarsalOsteotomiesCarrie Luna, D.P.M. Podiatric Surgical Resident, 1999-2000 Comparison of the ReUnite Absorbable Screw and Synthes CorticalScrew for the Fixation of Kalish OsteotomyDale Buranosky, D.P.M. Podiatric Surgical Resident, 1999-2000 First Metatarsal Phalangeal Joint FusionClifford Retief, D.P.M. Podiatric Surgical Resident, 1998-1999 Comparison of Tension Band Wiring and Screw Fixation for the FifthMetatarsal Base Fracture Distal to the TuberosityTimothy Felton, D.P.M. Podiatric Surgical Resident, 1997-1998 Comparison of Modified Chevron and Inverted Z Osteotomy StrengthChris Payette, D.P.M. Podiatric Surgical Resident, 1995-1996 Triple Arthrodesis Stabilization- Screw vs. Staple FixationMike Miller, D.P.M., July 1993-December 1993 "A Comparison of Traditional and Nontraditional Z-Bunionectomies"F. Medical Student Supervision Effect of Localized Growth Hormone Transgene Expression on TissueCharacteristics in oim Mouse Vertebrae Matt Gullickson, Loyola University of Chicago Stritch School ofMedicine, 1997 "Anatomy and Histology of the Interosseous Membrane" Emmie Hsu, Loyola University of Chicago Stritch School of Medicine,1993 "Evaluation of pinning techniques for distal humeral fractures" Mike Freehill, Mike Sacco, Brian Dobozi, 1992-93 Determination of Cross-Sectional Properties and Bone MineralContents of the Human Radius and Ulna Emmie Hsu, Loyola University of Chicago Stritch School of Medicine,1989-1991 Biomechanical and Morphometric Studies of Vertebral TrabecularBone Emmie Hsu, Loyola University of Chicago Stritch School of Medicine,1989-1990 Determination of Cross-Sectional Properties of the Radius andUlna William Martin, Loyola University of Chicago Stritch School ofMedicine, Summer 1989 Three-Dimensional Geometric Investigation of the Distal Radius

19. Craig Humphrey, Loyola University of Chicago Stritch School ofMedicine, Spring 1989 Experimental Production of Burst Fractures Dale Mueller, Loyola University of Chicago Stritch School ofMedicine, Summer 1988 Elective Clerkship - Orthopaedic Biomechanics Research Harvey Mirley, Loyola University of Chicago Stritch School ofMedicine, Spring 1986 Elective Clerkship - Orthopaedic Biomechanics Research Robert Nixon, Loyola University of Chicago Stritch School ofMedicine, Spring 1986 Elective Clerkship - Orthopaedic Biomechanics Research Albert Doornik, Loyola University of Chicago Stritch School ofMedicine, Fall 1985 Elective Clerkship - Orthopaedic Biomechanics Research John Jiganti, Loyola University of Chicago Stritch School ofMedicine, Fall 1984 "Effect of Fibular Shortening on Biomechanics of the Ankle Joint" "Facet Joint Loads in Spinal Segments with Spina Bifida Occulta" James Hoyt, Loyola University of Chicago Stritch School ofMedicine, July-Dec 1983 "Effects of Chymopapain Injection on the Biomechanics of SpinalSegments" Bruce M. Potenza, Chicago Medical School, Spring 1983XIII. TEACHING EXPERIENCE BIOE 415: Biomechanics. Senior/Graduate level course taught in theBioengineering Department, University of Illinois at Chicago, 1992-2000. BIOE 515: Mechanics of the Human Spine. Graduate level course inthe Bioengineering Department, University of Illinois at Chicago, 1994-1998. Instruction in Principles of Orthopaedic Biomechanics to Residentsin Orthopaedic Surgery: Development of teaching modules for Statics,Mechanics of materials, Mechanics of structures, and Dynamics. 1985-2000. Instruction in Orthopaedic Basic Science Curriculum for residentsin Orthopaedic Surgery: Form and function of bone, growth plate andtrabecular bone mechanics, bone fracture repair, biomechanics ofarticular cartilage, tendon, ligament and meniscus, skeletal muscle,biomaterials, kinesiology. 1995-2000. Instruction in Biomechanics of spine and spinal orthoses tostudents in the Graduate Certificate Program in Orthotics at NorthwesternUniversity Prosthetic-Orthotic Center. 1989-00. Undergraduate and graduate courses taught at Illinois Institute ofTechnology and Oklahoma State University: Kinematics and dynamics ofmachines, Numerical methods of Engineering Analysis, Methods of Computer-Aided Design and Optimization.engineering analysis, Methods of computeraided design and optimization.

20. XIV. BibliographyPeer-Reviewed Journal Articles:Patwardhan AG, Lee B, Meade KP: Frontal Plane Response of the LumbarSpine Subjected to a Follower Load Role of Muscles. J. BiomechanicalEngineering (In Press: Projected publication date, June 2001).Humphreys SC, Hodges SD, Patwardhan AG, Eck JC, Murphy RB, Covington LA:Comparison of Posterior and Transforaminal Approaches in PerformingLumbar Interbody Fusion. Spine, (In Press: Projected publication date,June 2001).Zindrick MR, Knight GW, Sartori MJ, Carnevale TJ, Patwardhan AG, LorenzMA: Pedicle Morphology of the Immature Thoracolumbar Spine. Spine, 25(21):2726-2735, 2000.Umehara S, Zindrick MR, Patwardhan AG, Havey RM, Vrbos LA, Knight GW,Miyano S, Kirincic M, Kaneda K, Lorenz M: The Biomechanical Effect ofPostoperative Hypolordosis in Instrumented Lumbar Fusion on Instrumentedand Adjacent Spinal Segments. Spine, 25 (13):1617-1624, 2000.Patwardhan AG, Havey RM, Ghanayem AJ, Diener H, Meade KP, Dunlap, B,Hodges SD: Load Carrying Capacity of the Human Cervical Spine inCompression is Increased Under a Follower Load. Spine, 25 (12):1548-1554,2000.Patwardhan AG, Parnianpour M, Meade KP, Rizza R, Li S: Effect of SpinalMusculature on the Mechanics of the Lumbar Spine. Biomedical Engineering-Applications, Basis & Communications, 11:249-258, 1999.Lim TH, Patwardhan AG, Hong JH, An HS, Riley LH, Hodges S, Zindrick MR:Effect of Instrumented Lumbar Fusion on the Flexibility and ViscoelasticProperties of the Adjacent Segment: An In Vivo Canine Study. J.Musculoskeletal Research 3(2):125-136, 1999.Natarajan RN, Andersson GBJ, Patwardhan AG, Andriacchi TP: Study on theEffect of Graded Facetectomy on Change in Lumbar Motion Segment TorsionalFlexibility Using Three Dimensional Continuum Contact Representation forFacet Joints. J Biomechanical Engineering 121:215-221, 1999.Khan T, Havey RM, Sayers ST, Patwardhan AG, King WW: Animal Models ofSpinal Cord Injuries. Laboratory Animal Science 49(2):161-172, 1999.Patwardhan AG, Havey RM, Meade KP, Lee B, Dunlap B: A Follower LoadIncreases the Load Carrying Capacity of the Lumbar Spine in Compression.Spine 24(10):1003-1009, 1999.Steinke B, Patwardhan AG, Havey R, King D: Human Growth Hormone TransgeneExpression Increases the Biomechanical Structural Properties of MouseVertebrae. Spine 24(1):1-4, 1999.Payette CR, Sage RA, Gonzalez JV, Sartori M, Patwardhan AG, Vrbos L:Triple Arthrodesis Stabilization: A Quantitative Analysis of Screw VersusStaple Fixation in Fresh Cadaveric Matched-Pair Specimens. J. Foot andAnkle Surgery 37(6):472-480, 1998.Katagiri K, Tadano S, Ukai T, Patwardhan AG, Havey RM, Ghanayem AJ:Measurement of Intradiscal Pressure Response in Low-Frequency CyclicLoading. Transactions of the Japan Society of Mechanical Engineers64:2429-2434, 1998.Humphreys SC, Chase J, Patwardhan AG, Shuster J, Lomasney L, Hodges S:Flexion and Traction Effect on C5-C6 Foraminal Space. Archives ofPhysical Medicine and Rehabilitation 79:1105-1109, 1998.Humphreys SC, Hodges S, Patwardhan AG, Eck JC, Shepard LC, Sartori M: TheNatural History of the Cervical Foramen in Both Symptomatic andAsymptomatic Individuals as Measured by MRI. Spine 23:2180-2184, 1998.

21. Wang JL, Parnianpour M, Shirazi-Adl A, Engin AE, Li S, Patwardhan A:Development and Validation of a Viscoelastic Finite Element Model of anL2/L3 Motion Segment. Theoretical and Applied Fracture Mechanics 28:81-93, 1997.Andreshak JL, Rabin SI, Patwardhan AG, and Wezeman FH: Tibial SegmentalDefect Repair: Chondrogenesis and Biomechanical Strength Modulated byBasic Fibroblast Growth Factor. Anatomical Record 248:198-204, 1997.Saban J, Zussman MA, Havey R, Patwardhan AG, Schneider GB, and King D:Heterozygous OIM Mice Exhibit a Mild Form of Osteogenesis Imperfecta.Bone 19(6):575-579, 1996.Patwardhan AG, Gavin TM, Bunch WH, Dvonch VM, Vanderby R, Meade KP, andSartori M: A Biomechanical Comparison of the Milwaukee Brace (CTLSO) andthe TLSO for the Treatment of Idiopathic Scoliosis. J. Prosthetics andOrthotics 8(4):115-122, 1996.Patwardhan AG, Rimkus A, Gavin TM, Bueche M, Meade KP, Bielski R, andIbrahim K: Geometric Analysis of Coronal Decompensation in IdiopathicScoliosis. Spine 21(10):1192-1200, 1996.Havey RM, Gavin TM, Patwardhan AG, and Meade KP: Methodology-Measurements, Part II: Instrumentation and Apparatus. J. Prosthetics andOrthotics 8(2):50-64, 1996.Pinzur MS, Cox W, Kaiser J, Morris T, Patwardhan AG, and Vrbos L: TheEffect of Prosthetic Alignment on Relative Limb Loading in Persons withTrans-tibial Amputation: A Preliminary Report. J. RehabilitationResearch and Development 32(4):373-378, 1995.Slosar P, Patwardhan A, Lorenz M, Havey R, and Sartori M: Instability ofthe Lumbar Burst Fracture and Limitations of TranspedicularInstrumentation. Spine 20:1452-1461, 1995.Li S, Patwardhan A, Amirouche F, Havey R, and K. Meade: Limitations ofthe Standard Linear Solid Model of Intervertebral Discs Subject toProlonged Loading and Low-Frequency Vibrations in Axial Compression. J.Biomechanics 28(7):779-790, 1995.Miller JM, Stuck R, Sartori M, Patwardhan AG, Cane R, and Vrbos L: TheInverted Z Bunionectomy: Quantitative Analysis of the Scarf and InvertedScarf Bunionectomy Osteotomies in Fresh Cadaveric Matched Pair Specimens.The Journal of Foot and Ankle Surgery 33(5):455-462, 1994.Amirouche FML, Xie M, and Patwardhan AG: Optimization of the ContactDamping and Stiffness Coefficients to Minimize Human Body Vibration.Journal of Biomechanical Engineering 116(4):413-420, 1994.Rabinowitz R, Light T, Havey R, Gourineni P, Patwardhan A, Sartori M, andVrbos L: The Role of the Interosseous Membrane and TriangularFibrocartilage Complex (TFCC) in Forearm Stability. J. Hand Surgery19A (3):385-393, May 1994.Hsu ES, Patwardhan AG, Meade KP, Light TR, and Martin WR: Cross-Sectional Geometrical Properties and Bone Mineral Contents of the HumanRadius and Ulna. Journal of Biomechanics 26(11):1307-1318, 1993.Pinzur MS, Smith D, Tornow D, Meade K, and Patwardhan A: Gait Analysisof Dysvascular Below-Knee and Contralateral Through-Knee BilateralAmputees: A Preliminary Report. Orthopedics 16(8):875-879, 1993.Gavin TM, Boscardin JB, Patwardhan AG, Bunch WH, Zindrick MR, Lorenz MA,and Vrbos LA: Preliminary Results of Orthotic Treatment for Chronic LowBack Pain. Journal of Prosthetics and Orthotics 5(1):25-29, 1993.Perona PG, Lawrence J, Paprosky WG, Patwardhan AG, Sartori M, and MoralesSD: Acetabular Micromotion as a Measure of Initial Implant Stability inPrimary Hip Arthroplasty. An In Vitro Comparison of Different Methods of

22. Initial Acetabular Component Fixation. Journal of Arthroplasty7(4):537-547, 1992.Chang H, Gilbertson LG, Goel VK, Winterbottom JM, Clark CR, andPatwardhan AG: Dynamic Response of the Occipito-Atlanto-Axial (C0-C1-C2)Complex in Axial Rotation. Journal of Orthopaedic Research 10(3):446-453, May 1992.Pinzur MS, Schumacher D, Reddy N, Osterman H, Havey R, and Patwardhan A:Preventing Heel Ulcers: A Comparison of Prophylactic Body-SupportSystems. Archives of Physical Medicine and Rehabilitation 72:508-510,June 1991.Pinzur MS, Perona P, Patwardhan AG, and Havey R: Loading of theContralateral Foot in Peripheral Vascular Insufficiency Below-KneeAmputees. Foot and Ankle 11(6):368-371, 1991.Patwardhan AG, Li S, Gavin TM, Lorenz MA, Meade KP, and Zindrick M:Orthotic Stabilization of Thoracolumbar Injuries. A BiomechanicalAnalysis of the Jewett Hyperextension Orthosis. Spine 15(7): 654-661,July 1990.Apel DM, Patwardhan AG, Pinzur, MS, and Dobozi WR: Axial Loading Studiesof Unstable Intertrochanteric Fractures of the Femur. ClinicalOrthopaedics and Related Research 246:156-164, September 1989.Blevens AD, Light TR, Jablonsky WS, Smith DG, Patwardhan AG, Guay ME, andWoo TS: Radiocarpal Articular Contact Characteristics with ScaphoidInstability. Journal of Hand Surgery, 14A:781-790, September 1989.Stuck RM, Moore JW, Patwardhan AG, Sartori MJ: Forces Under the HalluxRigidus Foot with Surgical and Orthotic Intervention. Journal of AmericanPodiatric Medical Association 78(9):465-468, 1988.Meade KP, Bunch WH, Vanderby R, Patwardhan AG, Knight GW: Progression ofUnsupported Curves in Adolescent Idiopathic Scoliosis. Spine 12(6):520-526, 1987.Hitchcock T, Light T, Bunch WH, Knight GW, Sartori M, Patwardhan AG,Hollyfield R: Effect of Immediate Controlled Digital Motion on theStrength of Flexor Tendon Repairs. Journal of Hand Surgery Vol 12A,No.4, pp. 590-595, July 1987.Zindrick MR, Wiltse LL, Doornik A, Widell EH, Knight GW, Patwardhan AG,Thomas JC: Analysis of the Morphometric Characteristics of theThoracolumbar Pedicles. Spine, 12(2):160-166, 1987.Vanderby R, Daniele M, Patwardhan AG, Bunch WH: A Method forIdentification of In Vivo Segmental Stiffness Properties of the Spine.Journal of Biomechanical Engineering , Vol 108, pp. 312-316, November1986.Patwardhan AG, Bunch WH, Meade KP, Vanderby R, Knight GW: ABiomechanical Analog of Curve Progression and Orthotic Stabilization inIdiopathic Scoliosis. Journal of Biomechanics, 19(2):103-117, 1986.Bunch WH, Patwardhan AG, Dvonch VM: A Mechanism of Action of SpinalOrthoses. Journal of the Association of Childrens Prosthetic-OrthoticClinics, 18(5): 7-10, Winter 1983.Vanderby R, Patwardhan AG: Computers in Rehabilitative Biomechanics.Association of Computing Machinery SigCAPH Quarterly, Number 3; pp 16-26, Winter 1983.Lorenz M, Patwardhan AG, Vanderby R: Load Bearing Characteristics ofLumbar Facets in Normal and Surgically Altered Spinal Segments. Spine,8: 122-130, 1983.Patwardhan AG, Soni AH, Sullivan JA, Gudavalli MR, Srinivasan V:Kinematic Analysis and Simulation of Vertebral Motion Under Static Load-

23. Part II: Simulation Study. Journal of Biomechanical Engineering,104:112-118, May 1982.Soni AH, Sullivan JA, Patwardhan AG, Gudavalli MR, Chitwood J: KinematicAnalysis and Simulation of Vertebral Motion Under Static Load- Part I:Kinematic Analysis. Journal of Biomechanical Engineering, 104: 105-111,May 1982.Patwardhan AG, Soni AH: Motion Simulation of an Articulated Robotic ArmSubjected to Static Forces. Journal of Mechanical Design, 104: 494-503,1982.Patwardhan AG, Soni AH, Sullivan JA: A General Method to Locate a Bodyin 3-D Space using X-ray Exposure in Two Oblique Planes. Mechanisms andMachine Theory, 16(4):459-461, 1981.Patwardhan AG, Soni AH, Sullivan JA: Technology Transfer inBiokinematics of the Human Spine. Journal of Mechanical Design, 101: 594-603, October 1979.Patwardhan AG, Soni AH: Synthesis of a Planar Four-Bar Crank-RockerMechanism with Elastic Links. ASME Paper No. 76-DET-73, 1976.Journal Articles In Review:Havey RM, Gavin TM, Patwardhan AG, Pawelczak SB, Ibrahim KN: A ReliableAnd Accurate Method of Measuring Orthosis-Wearing Compliance. Spine (InReview).Invited Discussion:Patwardhan AG: Point of View. Spine 19:2671, 1994. Invited discussionof the article by Haher et al.Book:Bunch WH and Patwardhan AG: Scoliosis- Making Clinical Decisions. TheC. V. Mosby Company, St. Louis, 1989.Book Chapters:Flanagan PF, Gavin TM, Patwardhan AG, Gavin DQ: Spinal Orthoses. Chapter14, In Lusardi and Nielson Eds. Orthotics and Prosthetics inRehabilitation. Butterworth-Heinemann Publishers, Newton, Massachusetts,June 2000.Gavin TM, Bunch WH, Patwardhan AG, Meade KP, Shurr DG, Orthotic Treatmentfor Spinal Disorders. Chapter 85, In Pediatric Spine, 2nd Edition, EdWeinstein SL, Lippincott Raven, 2000.Gavin TM, Patwardhan AG, Levine PD, Gavin DQ, Fenwick L: Principles andComponents of Spinal Orthoses. in Atlas of Orthotics , C.V. Mosby, pp.155-194, 1997.Lorenz M and Patwardhan AG: The Three-Joint Complex. in The LumbarSpine, Second edition, W. B. Saunders Company, Philadelphia, Vol. 1, pp.52-57, 1996.Gavin TM, Shurr DG, Patwardhan AG: Orthotic Treatment for SpinalDisorders. in Pediatric Spine, S. Weinstein, Ed., Ravin Press, Vol. 2,pp. 1795-1828, 1994.Patwardhan AG, Gavin TM, Slosar PJ, and Lorenz MA: Biomechanics ofImplants and Orthoses for Thoracolumbar Injuries. in Spine: State of theArt Reviews, Hanley and Belfus, Inc., Philadelphia, Vol. 7, No. 2, pp.261-280, 1993.Patwardhan AG, Bunch WH, Dvonch VM, Gavin TM, and Goel V: Biomechanics ofAdolescent Idiopathic Scoliosis- Natural History and Treatment. in

24. Biomechanics of the Spine- Clinical and Surgical Perspective, V.K. Goeland J.N. Weinstein, Eds., CRC Press, pp. 251-285, 1990.Goel V, Weinstein J, and Patwardhan AG: Biomechanics of IntactLigamentous Spine. in Biomechanics of the Spine- Clinical and SurgicalPerspective, V.K. Goel and J.N. Weinstein, Eds., CRC Press, pp. 97-156,1990.Lorenz M, Patwardhan AG, and Zindrick M: Instability and Mechanics ofImplants and Braces for Thoracic and Lumbar Fractures. in Spinal Trauma,T. Erico, Ed., J. B. Lippincott and Co., pp. 271-280, 1990.Vanderby R, Patwardhan AG, Meade KP, and Bunch WH: Spinal Stability inAdolescent Idiopathic Scoliosis. in Computational Methods inBioengineering, R. L. Spilker and B. R. Simon, Eds., pp. 411-425, 1988.Patwardhan AG, Vanderby R, Knight GW, Gogan W, Levine P: Biomechanics ofthe Spine. Chapter 7. Atlas of Orthotics - Biomechanical Principles andApplication, The C.V. Mosby Company, St. Louis, 1985, pp 139-150.Conference Abstracts and Presentations:Gudavalli MR, Cox JM, Cramer GD, Baker JA, Patwardhan AG: VertebralMotions During Flexion-Distraction Treatment for Low Back Pain. Presentedat the 2000 ASME Winter Annual Meeting, November 5-10, 2000, Orlando,Florida.Havey R, Gavin TM, Patwardhan AG, Pawelczak SB and Ibrahim KN: A ReliableAnd Accurate Method of Measuring Orthosis-Wearing Compliance. Presentedat the 27th Annual Meeting of the International Society for the Studiesof the Lumbar Spine. Adelaide, Australia. April 2000.Patwardhan A, Havey R, Ghanayem A, Diener H, Meade K, Dunlap B, Hodges S:A Follower Load Stabilizes the Lumbar Spine with Minimal Changes inSagittal Plane Mobility. Presented at the 46th Annual Meeting of theOrthopaedic Research Society, March 12-15, 2000, Orlando, Florida.Havey RM, Gavin TM, Patwardhan AG, Pawelczak S, Ibrahim K: A Reliable andAccurate Method of Measuring Orthosis-Wearing Time. Presented at the 1999ASME International Mechanical Engineering Congress, November 14-19, 1999,Nashville, Tennessee.Gudavalli MR, Backman JA, Kirstukas SJ, Kadiyala AV, Patwardhan AG,Ghanayem AJ: Electromyographic Activity of Trunk Muscles During Flexion-Distraction Treatment of Low Back patients. Presented at the 1999 ASMEInternational Mechanical Engineering Congress, November 14-19, 1999,Nashville, Tennessee.Patwardhan AG, Havey R, Diener H, Ghanayem AJ, Meade KP, Lim TH: AFollower Load Stabilizes the Lumbar Spine Without Compromising SagittalMobility. Presented at the 14th Annual Meeting of the North AmericanSpine Society, October 20-23, 1999, Chicago, Illinois.Havey RM, Gavin TM, Patwardhan AG, Pawelczak S, Ibrahim K: A Reliable andAccurate Method of Measuring Orthosis-Wearing Time. Presented at the 14thAnnual Meeting of the North American Spine Society, October 20-23, 1999,Chicago, Illinois.Patwardhan AG, Havey R, Diener H, Ghanayem AJ, Meade KP, Lim TH: AFollower Load Stabilizes the Lumbar Spine Without Compromising SagittalMobility. Presented at the Annual Meeting of the International Societyfor the Study of the Lumbar Spine, June 21-25, 1999, Kona, Hawaii.Lim TH, Fujiwara A, Tanaka N, Jeon CH, Kim J, Garretson R, An H,Andersson GBJ, Havey R, Patwardhan AG: Effect of Follower Load on theLumbar Segmental Rotational Motion. Presented at the Annual Meeting of

25. the International Society for the Study of the Lumbar Spine, June 21-25,1999, Kona, Hawaii.Patwardhan A, Havey R, Ghanayem A, Diener H, Meade K, Dunlap B, Hodges S:Load Carrying Capacity of the Human Cervical Spine in Compression isIncreased Under a Follower Load. Presented at the 45th Annual Meeting ofthe Orthopaedic Research Society, February 1-4, 1999, Anaheim,California.Patwardhan AG, Havey R, Ghanayem AJ, Diener H, Meade KP, Dunlap B, HodgesS: Load Carrying Capacity of the Human Cervical Spine in Compression isIncreased Under a Follower Load. Presented at the Twenty-Sixth AnnualMeeting, Cervical Spine Research Society, December 3-5, 1998, Atlanta,Georgia.Parten P, Ghanayem AJ, Havey R, Bourn S, Patwardhan AG: Hydrostatic LoadsWithin a Cervical Interbody Fusion Cage: An In Vitro Model. Presented atthe Twenty-Sixth Annual Meeting, Cervical Spine Research Society,December 3-5, 1998, Atlanta, Georgia.Gavin TM, Patwardhan AG, Meade KP: Orthotic Management of Fractures ofthe Thoracolumbar Spine. Treatment of Spinal Disorders, Symposiumsponsored by the Rotary Club of Southern Bogota and Laboratorio Gilete,November 1998, Bogota, Colombia.Gavin TM, Patwardhan AG, Meade KP, Pawelczak SB: A New Approach to theOrthotic Management of Scoliosis. Treatment of Spinal Disorders,Symposium sponsored by the Rotary Club of Southern Bogota and LaboratorioGilete, November 1998, Bogota, Colombia.Patwardhan AG, Gavin TM, Meade KP, Pawelczak SB: Biomechanics of SpinalDisorders. Treatment of Spinal Disorders, Symposium sponsored by theRotary Club of Southern Bogota and Laboratorio Gilete, November 1998,Bogota, Colombia.Patwardhan, AG, Havey RM, Meade KP, Lee B, Dunlap B, Gavin TM: Stabilityof the Lumbar Spine Subjected to a Follower Load- Part I: ExperimentalResults. Presented at the 1998 ASME International Mechanical EngineeringCongress, November 16-20, 1998, Anaheim, California.Meade KP and Patwardhan, AG: Stability of the Lumbar Spine Subjected to aFollower Load- Part I: Theoretical Results. Presented at the 1998 ASMEInternational Mechanical Engineering Congress, November 16-20, 1998,Anaheim, California.Gudavalli MR, Cox JM, Cramer GD, Baker JA, Patwardhan AG: IntervertebralDisc Pressure Changes During Low Back Treatment Procedures. Presented atthe 1998 ASME International Mechanical Engineering Congress, November 16-20, 1998, Anaheim, California.Patwardhan AG, Lee B, Meade KP, Havey R, Gavin TM: Follower Load- A NovelConcept of In Vivo Spine Stability. Presented at the Annual Meeting ofthe American Orthotic-Prosthetic Association, September 1998, Chicago,Illinois.Gavin TM, Patwardhan AG, Meade KP: Geometric Considerations in OrthoticTreatment of Idiopathic Scoliosis. Presented at the Annual Meeting of theAmerican Orthotic-Prosthetic Association, September 1998, Chicago,Illinois.Gavin TM, Patwardhan AG, Meade KP, Bunch WH: Biomechanics of Orthoses.Presented at the Bracing Symposium, Scoliosis Research Society,September 1998, New York.Umehara S, Patwardhan AG, Zindrick MR: Effect of Spinal Fusion onAdjacent Segments. Presented at the 3rd World Congress of Biomechanics,August 2-8, 1998, Sapporo, Japan.

26. Patwardhan AG, Havey, RM, Meade KP, Lee B, Dunlap B: A Follower LoadIncreases the Load Carrying Capacity of the Lumbar Spine in Compression.Presented at the Annual Meeting of the International Society for theStudy of the Lumbar Spine, June 9-13, 1998, Brussels, Belgium.Patwardhan AG, Lee B, Meade KP, Havey R, Gavin TM: The Follower Load Pathis a Path of Spinal Stability- Lumbar Spine Stability and Implications toMuscle Coactivation. Presented at the Annual Meeting of the AmericanAcademy of Orthotists and Prosthetists, April 1998, Miami, Florida.Gavin TM, Patwardhan AG, Meade KP: Analysis of geometric Outcome ofOrthotic Treatment of Idiopathic Scoliosis. Presented at the AnnualMeeting of the American Academy of Orthotists and Prosthetists, April1998, Miami, Florida.Cardinne L, Wezeman FH, Patwardhan AG, Light T: FibrochondrocyteAllografts Promote Healing of Standardized Meniscal Defects in theAvascular Zone. Presented at the 44th Annual Meeting, OrthopaedicResearch Society, March 16-19, 1998, New Orleans, Louisiana.Natarajan RN, Paruchuri S, Andersson GBJ, Lavender SA, Patwardhan AG:Calculation of a Critical Magnitude of Facet Resection Responsible forSudden Increase in Flexibility of a Lumbar Spine Motion Segment.Presented at the 44th Annual Meeting, Orthopaedic Research Society, March16-19, 1998, New Orleans, Louisiana.Patwardhan AG, Meade KP, Lee B: A Follower Load Increases the LoadCarrying Capacity of the Lumbar Spine in Compression- Muscle Activationand Stabilization. Presented at the 44th Annual Meeting, OrthopaedicResearch Society, March 16-19, 1998, New Orleans, Louisiana.Chase J, Patwardhan AG, Havey R, Gullickson M, King D: Effects of GrowthHormone Transgene Expression on Vertebrae in a Mouse Model ofOsteogenesis Imperfecta. Presented at the 44th Annual Meeting,Orthopaedic Research Society, March 16-19, 1998, New Orleans, Louisiana.Felton T, Sage R, Patwardhan A: Comparison of Modified Chevron andInverted Z Osteotomy Strength. Presented at the 56th Annual Meeting,American College of Foot and Ankle Surgeons, February 11-14, 1998,Orlando, Florida.Sacco M, Ghanayem A, Havey R, Patwardhan A: The Effect of SagittalRotation on Anterior Cervical Plate Fixation at the CervicothoracicJunction. Presented at the 25th Annual Meeting, Cervical Spine ResearchSociety, December 4-6, 1997, Rancho Mirage, California.Gudavalli MR, Cox JM, Baker JA, Cramer GD, Patwardhan AG: IntervertebralDisc Pressure Changes During a Chiropractic Procedure. Presented at theWinter Annual meeting, American Society of Mechanical Engineers-Bioengineering Division, November 16-19, 1997, Dallas, Texas.Natarajan RN, Paruchuri S, Andersson GBJ, Lavender SA, Patwardhan AG: TheEffect of Graded facetectomies on the Stiffness of the Lumbar Spine.Presented at the Winter Annual meeting, American Society of MechanicalEngineers-Bioengineering Division, November 16-19, 1997, Dallas, Texas.Patwardhan AG, Havey R, Meade KP: A Follower Load Increases the Loadcarrying Capacity of the Lumbar Spine in Compression. Presented at the1997 North American Spine Society Meeting, October 23-24, 1997, New York,New York.Patwardhan AG, Havey R, Meade KP: A Follower Load Increases the AxialLoad carrying Capacity of the Lumbar Spine in the Upright Posture.Presented at the 1997 Scoliosis Research Society Meeting, September 25-27, 1997, St. Louis, Missouri.

27. Steinke B, Patwardhan AG, Havey R, King D: hGH Transgene ExpressionEnhances the Structural Properties of Mouse Vertebrae. Presented at the1997 Summer Bioengineering Conference, June 11-15, 1997, Sunriver,Oregon.Patwardhan AG, Havey R, Millar J, Meade KP, Katagiri K: A Follower LoadIncreases the Load carrying Capacity of the Lumbar Spine in AxialCompression. Presented at the 1997 Summer Bioengineering Conference, June11-15, 1997, Sunriver, Oregon.Ghanayem AJ, Bourn SM, Havey R, Patwardhan A: Hydrostatic Loads Within anIntervertebral Fusion Cage: An In Vitro Model. Presented at the 24thannual meeting, International Society for the Study of the Lumbar Spine,June 2-6, 1997, Singapore.Gudavalli MR, Cox JM, Baker JA, Cramer GD, Patwardhan AG: IntervertebralDisc Pressure Changes During Flexion-Distraction Procedure for Low BackPain. Presented at the 24th annual meeting, International Society for theStudy of the Lumbar Spine, June 2-6, 1997, Singapore.Steinke B, Patwardhan A, Havey R, King D: Positive Effect of hGHTransgene Expression on the Structural Properties of Mouse Vertebrae.Presented at the 24th annual meeting, International Society for the Studyof the Lumbar Spine, June 2-6, 1997, Singapore.Griffith P, Tonino P, Patwardhan A, Sartori M, Hopkinson W:Patellofemoral Malalignment and ACL Reconstruction: Can PatellofemoralContact Forces be Modified? Annual Meeting of the American Academy ofOrthopaedic Surgeons, February 13-17, 1997, San Francisco, California.Umehara S, Zindrick MR, Patwardhan AG, Vrbos LA, Havey RM, Lorenz MA:Postoperative Sagittal Malalignment in Instrumented Lumbar Fusion CausesAbnormal Loading of the Adjacent Segments. 43rd Annual Meeting,Orthopaedic Research Society, February 9-13, 1997, San Francisco,California.Zussman M, Saban J, Havey R, Patwardhan A, Schneider G, King D: Strategyto Improve Bone Quality in Osteogenesis Imperfecta. 43rd Annual Meeting,Orthopaedic Research Society, February 9-13, 1997, San Francisco,California.Rimkus A, Patwardhan AG, Meade KP, Gavin TM, Bueche MJ: Mechanism ofCoronal Decompensation in Idiopathic Scoliosis. Presented at the WinterAnnual meeting, American Society of Mechanical Engineers-BioengineeringDivision, November 17-22, 1996, Atlanta, Georgia.Meade KP, Patwardhan AG, Gavin TM: A Viscoelastic Model for the NaturalHistory of Adolescent Idiopathic Scoliosis. Presented at the WinterAnnual meeting, American Society of Mechanical Engineers-BioengineeringDivision, November 17-22, 1996, Atlanta, Georgia.Umehara S, Zindrick MR, Patwardhan AG, Vrbos LA, Havey RM, Lorenz MA:The Clinical and Biomechanical Consequences of the Sagittally MalalignedLumbar Spine Upon Adjacent Segments. Presented at the 23rd annualmeeting, International Society for the Study of the Lumbar Spine, June25-29, 1996, Burlington, Vermont.Shuster J, Chase J, Humphreys C, Lomasney L, Patwardhan A, Hodges S:Effect of Flexion and Traction on C5-6 Foraminal Space. 42nd AnnualMeeting, Orthopaedic Research Society, February 19-22, 1996, Atlanta,Georgia.Sompalli C, Rabin S, Patwardhan A, Hodges S, Light T, Sartori M, Vrbos L:Instability of Type II Sacral Fractures With Anterior Ring DisruptionBefore and After Fixation. 42nd Annual Meeting, Orthopaedic ResearchSociety, February 19-22, 1996, Atlanta, Georgia.

28. Marra G, Bednar M, Sompalli C, Sartori M, Patwardhan AG, Wezeman F, LightT: Effect of Periosteal Integrity on Growth of Nonvascularized BoneGrafts. 42nd Annual Meeting, Orthopaedic Research Society, February 19-22, 1996, Atlanta, Georgia.Lim TH, Patwardhan AG, Hong JH, An HS, Riley LH, Hodges S, Zindrick MR:Effect of Instrumented Fusion on the Biomechanics of Adjacent Segment- AnIn Vivo Canine Study. 42nd Annual Meeting, Orthopaedic Research Society,February 19-22, 1996, Atlanta, Georgia.Humphreys SC, Chase J, Lomasney L, Patwardhan AG, Shuster J: Effect ofFlexion and Traction on C5-C6 Foraminal Space. 23rd Annual Meeting ofthe Cervical Spine Research Society, Santa Fe, NM, November 30-December2, 1995.Patwardhan AG, Rimkus A, Gavin TM, Bueche M, Meade KP, Bielski R, andIbrahim K: Geometric Analysis of Coronal Decompensation in IdiopathicScoliosis. Winter Annual Meeting, American Society of MechanicalEngineers- Bioengineering Division, San Francisco, CA, November 12-17,1995.Chase J, Humphreys SC, Lomasney L, Patwardhan AG, Shuster J: Effect ofFlexion and Traction on C5-C6 Foraminal Space. 10th Annual Meeting ofthe North American Spine Society, Washington, D. C., October 18-21, 1995.King D, Saban J, Bolt D, Patwardhan A, Schneider G: Production of GrowthHormone by Erythroid Cells Increases Osteogenesis in Transgenic Mice. J.Bone Mineral Res. 10 (Suppl. 1):S173, 1995.Patwardhan AG, Rimkus A, Gavin TM, Bueche M, Meade KP, Bielski R, andIbrahim K: Geometric Analysis of Coronal Decompensation in IdiopathicScoliosis. Presented at the 30th Annual Meeting of the ScoliosisResearch Society, Asheville, NC, September 13-16, 1995.Meade KP, Patwardhan AG, Gavin T: Predictions of a Viscoelastic Modelfor Scoliosis. Proceedings of the 1995 Bioengineering Conference, BeaverCreek, Colorado, June 28-July 2, 1995, BED-Vol 29, pp. 531-532, 1995.Patwardhan AG, Bunag J, Meade KP, Amirouche F, Lorenz M: ViscoelasticResponse of Lumbar Discs in Shear and Compression. Proceedings of the1995 Bioengineering Conference, Beaver Creek, Colorado, June 28-July 2,1995, BED-Vol 29, pp. 283-284, 1995.Gudavalli MR, Triano JJ, Patwardhan AG, Havey R, McGregor M:Biomechanics of the Atlanto-Axial Joint During Vertebral ArteryProvocation Test. Proceedings of the 1995 Bioengineering Conference,Beaver Creek, Colorado, June 28-July 2, 1995, BED-Vol 29, pp. 321-322,1995.Patwardhan AG, Bunag J, Meade KP, Amirouche F, Lorenz M: Response ofLumbar Discs to Prolonged Loading and Low-Frequency Vibration in Shear,Compression, and Combined Loading. Presented at the 22nd annual meeting,International Society for the Study of the Lumbar Spine, June 18-22,1995, Helsinki, Finland.Li S, Patwardhan AG, Meade KP, Amirouche F: Response of IntervertebralDiscs to Prolonged Loading and Low-Frequency Vibration in AxialCompression: Simulation Using a Five-Parameter Model. Presented at the1994 International Mechanical Engineering Congress and Exposition,November 1994, Chicago, IL.Gilbertson LG, Goel VK, Patwardhan AG: Biomechanics of SpinalHyperextension Orthoses Used in the Treatment of Thoracolumbar Injuries.Presented at the 21st annual meeting, International Society for the Studyof the Lumbar Spine, June 21-25, 1994, Seattle, WA.

29. Hsu E, Light T, Patwardhan A, and Bednar M: The Anatomy and Histology ofthe Interosseous Membrane- Functional Implications. Proceedings of the11th Annual Residents and Fellows Hand Surgery Conference, September1993, Kansas City Missouri.Slosar P, Patwardhan A, Lorenz M, Havey R, and Sartori M: Stability ofPosterior Constructs for L1 Burst Fracture- A Comparison of 2-Column and3-Column Injuries. Proceedings of the ASME Bioengineering Conference,Breckenridge, Colorado, June 1993, BED-Vol. 24, pp. 183-185, 1993.Li S, Patwardhan A, Amirouche F, and Havey R: Viscoelastic Properties ofHuman Thoracic and Lumbar Spinal Segments- A Comparison with LinearViscoelastic Model Predictions. Proceedings of the ASME BioengineeringConference, Breckenridge, Colorado, June 1993, BED-Vol. 24, pp. 473-476,1993.Miller MC, Andreyko GM, Hake RN, Patwardhan AG, and Meade KP: Design andTesting of a Device to Load the Vertebral Endplate. Proceedings of theASME Bioengineering Conference, Breckenridge, Colorado, June 1993, BED-Vol. 24, pp. 624-625, 1993.Rabinowitz R, Light T, Havey R, Gourineni P, Patwardhan A, and Sartori M:Biomechanical Analysis of the Interosseous Membrane (IOM) and TriangularFibrocartilage Complex (TFCC) and Their Contribution to ForearmStability. Transactions of the 39th Annual Meeting, Orthopaedic ResearchSociety, February 1993, San Francisco, California, pp. 111.Alpan M, Meade K, Patwardhan A, and Arcan M: Effect of Low-Calcium Dieton the Mechanical Properties of Canine Vertebral Trabecular Bone.Presented at the Winter Annual Meeting of American Society of MechanicalEnginners-Bioengineering Division, November 1992, Anaheim, CA.Alpan M, Meade K, Patwardhan A, and Arcan M: A Strength Criterion forTrabecular Bone. Presented at the Winter Annual Meeting of AmericanSociety of Mechanical Enginners-Bioengineering Division, November 1992,Anaheim, CA.Li S, Patwardhan A, Amirouche F, Lim T, Havey R, and Meade K:Development of a Viscoelastic Solid Model of a Spinal Segment UsingConstrained Optimization. Presented at the Winter Annual Meeting ofAmerican Society of Mechanical Enginners-Bioengineering Division,November 1992, Anaheim, CA.Slosar PJ, Patwardhan AG, Lorenz M, Havey R, Nixon R, Seymour S, andSartori M: Three-Dimensional Instability of the Burst Fracture- AComparison of the Two-Column and Three-Column Injuries. Presented at theannual meeting of the Scoliosis Research Society, September 1992, KansasCity, Kansas.Slosar PJ, Patwardhan AG, Lorenz M, Havey R, Nixon R, Seymour S, andSartori M: The Three-Dimensional Instability Patterns of theThoracolumbar Burst Fracture. Presented at the annual meeting of theInternational Society for the Study of the Lumbar Spine, May 1992,Chicago, ILPerona P, Lawrence J, Paprosky W, Patwardhan A, and Sartori M: InitialStability of a Press-Fit Acetabular Component in Total Hip Replacementand the Effects of Screw and Spike Augmentation. Scientific Exhibit,Presented at the 59th annual meeting, American Academy of OrthopaedicSurgeons, February 1992, Washington, D.C.Slosar PJ, Patwardhan AG, Lorenz M, Havey R, Nixon R, Seymour S, andSartori M: The Three-Dimensional Instability Patterns of theThoracolumbar Burst Fracture. Presented at the 38th annual meeting,Orthopaedic Research Society, February 17-20, 1992, Washington, D.C.

30. Patwardhan AG, Parnianpour M, Meade KP, Rizza R, and Li S: Effect ofMuscle Activation Patterns on the Mechanics of the Lumbar Spine.Presented at the 38th annual meeting, Orthopaedic Research Society,February 17-20, 1992, Washington, D.C.Lim TH, Patwardhan AG, Li s, Chandran S, Meade KP, and Havey R: Effectof Low-Calcium Diet on the Viscoelastic Properties of the IntervertebralDisc- A Canine Model. Presented at the 38th annual meeting, OrthopaedicResearch Society, February 17-20, 1992, Washington, D.C.Gilbertson L, Goel V, Patwardhan A, Havey R, and Morris T: TheBiomechanical Function of "Three-Point" Hyperextension Orthoses.Presented at the Winter Annual Meeting of American Society of MechanicalEnginners-Bioengineering Division, December 1991, Atlanta, Georgia.Slosar P, Patwardhan A, Lorenz M, Havey R, Nixon R, Seymour S, andSartori M: Three-Dimensional Instability Patterns of the ThoracolumbarBurst Fracture. Presented at the Winter Annual Meeting of AmericanSociety of Mechanical Enginners-Bioengineering Division, December 1991,Atlanta, Georgia.Gilbertson L, Goel VK, and Patwardhan AG: Role of Facet Orientation inProducing Thoracolumbar Spinal Fractures. Presented at the BiomechanicsSymposium, June 16-19, 1991, Columbus, Ohio.Patwardhan A, Parnianpour M, Meade K, Rizza, R, and Li S: A FiniteElement Model of the Lumbar Spine to Study the Stabilizing Role ofDifferent Muscle Architectures. Presented at the Annual Meeting of theInternational Society for the Study of the Lumbar Spine, May 12-16, 1991,Heidelberg, Germany.Parnianpour M, Patwardhan A, and Aaron A: The Effects of PureCompressive Load on the Spinal Stability: A Test of MuscularCoactivation Theory. Presented at the Annual Meeting of theInternational Society for the Study of the Lumbar Spine, May 12-16, 1991,Heidelberg, Germany.Patwardhan A, Li S, Gavin T, Bunch W, and Hollyfield R: A BiomechanicalAnalysis of Surgical Correction in Combined Thoracic and LumbarIdiopathic Scoliosis. Presented at the 37th Annual Meeting, OrthopaedicResearch Society, March 4-7, 1991, Anaheim, California.Arcan M, Meade K, Patwardhan A, Sartori M, Alpan M, and Chandran S:Collapse of Vertebral Trabecular Bone: Relevant Mechanical Properties.Presented at the 37th Annual Meeting, Orthopaedic Research Society, March4-7, 1991, Anaheim, California.Hsu E, Patwardhan A, Light T, Meade K, and Martin W: Bone Mineral Massand Cross-Sectional Geometric Properties of the Human Radius and Ulna.Presented at the 37th Annual Meeting, Orthopaedic Research Society, March4-7, 1991, Anaheim, California.Farless B, Daley R, Schwartz C, Patwardhan A, and Bardfield S:Micromotion of the Tibial Component Augmented with Modular Wedges forDeficient Tibial Bone Stock. Presented at the 37th Annual Meeting,Orthopaedic Research Society, March 4-7, 1991, Anaheim, California.Lawrence J, Farless B, Schwartz C, Patwardhan A, Sartori M, Licus L, andBardfield S: Acetabular Micromotion as Measured by Laser HolographicInterferometry. Presented at the 37th Annual Meeting, OrthopaedicResearch Society, March 4-7, 1991, Anaheim, California.Hsu E, Patwardhan A, Light T, and Martin W: Cross-Sectional GeometricProperties of the Human Radius and Ulna. Presented at the 1990 ASMEWinter Annual Meeting, November 25-30, 1990, Dallas, Texas. Advances inBioengineering, pp. 177-180, November 1990.

31. Patwardhan A, Li S, Hollyfield R, and Gavin T: A Biomechanical Analysisof Surgical Correction in Combined Thoracic and Lumbar IdiopathicScoliosis. Presented at the 1990 ASME Winter Annual Meeting, November25-30, 1990, Dallas, Texas. Advances in Bioengineering, pp. 235-237,November 1990.Patwardhan AG, Li S, Gavin TM, Lorenz M, and Meade KP: Effectiveness ofa Three-Point Hyperextension Orthosis in Stabilizing ThoracolumbarInjuries: A Biomechanical Analysis. Presented at the Thirteenth AnnualConference, Rehabilitation Engineering Society of North America, June 15-20, 1990, Washington, D. C.Patwardhan AG, Li S, Gavin TM, Lorenz MA, Meade KP, and Zindrick M:Orthotic Stabilization of Thoracolumbar Injuries- A BiomechanicalAnalysis of the Jewett Hyperextension Orthosis. Presented at theSpecialty Day, 57th Annual Meeting, American Academy of OrthopaedicSurgeons, February 11, 1990, New Orleans, LA.Gavin TM, Fisk JR, and Patwardhan AG: Orthotic Treatment of Scoliosis inthe High Thoracic Spine. Presented at the Sixteenth Annual Meeting,American Academy of Orthotists and Prosthetists, January 24-28, 1990,Phoenix, Arizona.Patwardhan AG, Li S, Gavin T, Lorenz M, and Meade KP: OrthoticStabilization of Thoracolumbar Injuries- A Biomechanical Analysis.Presented at the Sixteenth Annual Meeting, American Academy of Orthotistsand Prosthetists, January 24-28, 1990, Phoenix, Arizona.Patwardhan AG, Li S, Gavin TM, Lorenz MA, Meade KP, and Zindrick M.:Effect of Injury and Orthotic Support on Segmental Motion of theThoracolumbar Spine. Presented at the Winter Annual Meeting of theAmerican Society of Mechanical Engineers, December 10-15, 1989, SanFrancisco, CA.Patwardhan AG, Li S, Gavin TM, Lorenz MA, Meade KP, and Zindrick M:Orthotic Stabilization of Thoracolumbar Injuries. Presented at theFourth Annual Meeting of the North American Spine Society, June 29-July2, 1989, Quebec City, Canada.Blevens AD, Light TR, Jablonsky WS, and Patwardhan AG: RadiocarpalArticular Contact Characteristics with Scaphoid Instability. Presentedat the 35th Annual Meeting of the Orthopaedic Research Society, February6-9, 1989, Las Vegas, Nevada.Hitchcock TF, Candel AG, Light TR, Sartori MJ, and Patwardhan AG: TheEffect of Different Repair Techniques on the Strength of Partial FlexorTendon Lacerations Over Time. Presented at the 35th Annual Meeting ofthe Orthopaedic Research Society, February 6-9, 1989, Las Vegas, Nevada.Patwardhan AG, Li S, Gavin TM, Meade KP, Lorenz M: Effect of Injury andOrthotic Support on the Stability of Spine. Presented at the AnnualInternational Conference of the IEEE-EMBS, November 1988, New Orleans,LA.Patwardhan AG, Li S, Gavin TM, Meade KP, Lorenz M: A Biomechanical Studyof Orthotic Stabilization in Nonoperative Treatment of Spinal Fractures.Presented at the 23rd Annual Meeting of the Scoliosis Research Society,September 1988, Baltimore, MD.Patwardhan AG, Dvonch V, Bunch WH, Gavin T, Meade KP, Vanderby R, SartoriM: Orthotic Stabilization of Idiopathic Scoliotic Curves- ABiomechanical Comparison of Low Profile and Milwaukee Braces. Presentedat the 34th Annual Meeting, Orthopaedic Research Society, February 1-4,1988, Atlanta, Georgia.

32. Woo TS, Smith DG, Light TR, Patwardhan AG: Load Bearing Characteristicsof the Normal Wrist and of the Wrist with Simulated Scaphoid Fracture.Presented at the 34th Annual Meeting, Orthopaedic Research Society,February 1-4, 1988, Atlanta, Georgia.Patwardhan AG, Dvonch V, Bunch WH, Gavin T, Meade KP, Vanderby R, SartoriM: Orthotic Stabilization of Idiopathic Scoliotic Curves- ABiomechanical Comparison of Low Profile and Milwaukee Braces. Presentedat the 22nd Annual Meeting, Scoliosis Research Society, September 15-19,1987, Vancouver, BC.Patwardhan AG, Dvonch V, Bunch WH, Gavin T, Meade KP, Vanderby R, SartoriM: Orthotic Stabilization of Idiopathic Scoliotic Curves- ABiomechanical Comparison of Low Profile and Milwaukee Braces. Presentedat the ASME Winter Annual Meeting, December 1987, Boston, MA.Patwardhan AG, Dvonch V, Bunch WH, Gavin T, Meade KP, Vanderby R, SartoriM: A Biomechanical Comparison of Low-Profile and Milwaukee Braces inOrthotic Treatment for Idiopathic Scoliosis. Presented at the 1987National Assembly, American Orthotic and Prosthetic Association,September 25-26, 1987, San Francisco, CA.Patwardhan AG, Dvonch V, Bunch WH, Gavin T, Sartori M, Meade KP, VanderbyR: Effect of Decompensation on Orthotic Treatment for Scoliosis.Presented at the ASME Biomechanics Symposium, June 15-17, 1987,Cincinnati, Ohio.Patwardhan AG, Dvonch V, Bunch WH, Vanderby R, Sartori M, Lorenz M, MeadeK: Biomechanics of the Lumbar and Thoracic Pads in Orthotic Treatmentfor Idiopathic Scoliosis. Presented at the 33rd Annual Meeting,Orthopaedic Research Society, January 19-22, 1987, San Francisco, CA.Apel D, Patwardhan AG, Pinzur M, Dobozi W: Biomechanical Studies ofUnstable Intertrochanteric Fractures of the Femur. Presented at the 33rdAnnual Meeting, Orthopaedic Research Society, January 19-22, 1987, SanFrancisco, CA.Patwardhan AG, Dvonch V, Bunch WH, Vanderby R, Sartori M, Lorenz M, MeadeK: Biomechanics of the Lumbar and Thoracic Pads in Orthotic Treatmentfor Idiopathic Scoliosis. Presented at the ASME Winter Annual Meeting,December 8-10, 1986, Anaheim California.Vanderby R, Patwardhan AG, Bunch WH, Meade KP, Vahey JW: TheBiomechanical Effects of Selective Fusion in Combined Thoracic and LumbarIdiopathic Scoliosis. Presented at the ASME Winter Annual Meeting,December 8-10, 1986, Anaheim, California.Patwardhan AG, Dvonch V, Bunch WH, Vanderby R, Sartori M, Lorenz M, MeadeK: Biomechanics of the Lumbar and Thoracic Pads. Presented at the21stAnnual Meeting of the Scoliosis Research Society, September 22-25, 1986,Hamilton, Bermuda.Vanderby R, Patwardhan AG, Bunch WH, Meade KP, Vahey JW: BiomechanicalConsiderations in the Selection of Fusion Levels in Combined Thoracic andLumbar Idiopathic Scoliosis. Presented at the21st Annual Meeting of theScoliosis Research Society, September 22-25, 1986, Hamilton, Bermuda.Zindrick MR, Wiltse LL, Doornik A, Widell EH, Knight GW, Patwardhan AG,Thomas JC: Analysis of the Morphometric Characteristics of theThoracolumbar Pedicles. Presented at the 21st Annual Meeting of theScoliosis Research Society, September 22-25, 1986, Hamilton, Bermuda.Patwardhan AG, Lorenz M, Orenstein E, Schiffman K, Knight GW, BoscardinJ, Hoyt J: A Biomechanical Study of Spina Bifida Occulta. Presented atthe Annual Meeting of the International Society for the Study of theLumbar Spine. May 28-June 2, 1986, Dallas, Texas.

33. Zindrick MR, Patwardhan AG, Lorenz M: The Effect of MethylmethacrylateAugmentation Upon Pedicle Screw Fixation in the Spine. Presented at theAnnual Meeting of the International Society for the Study of the LumbarSpine. May 28-June 2, 1986, Dallas, Texas.Patwardhan AG, Lorenz M, Meade, KP, Knight GW: Mechanisms of ParsFracture in the Fifth Lumbar Vertebra- Implications to the Etiology ofSpondylolysis. Presented at the 32nd Annual Meeting of the OrthopaedicResearch Society, February 17-20, 1985, New Orleans, Louisiana.Patwardhan AG, Lorenz M, Meade, KP, Knight GW: A Force Analysis of theNeural Arch of the Fifth Lumbar Vertebra- Implications to the Etiology ofSpondylolysis. Presented at the 1985 American Society of MechanicalEngineers Winter Annual Meeting, Bioengineering Symposium, November 1985,Miami, Florida.Patwardhan AG, Lorenz M, Meade, KP, Knight, GW, Dvonch, V: PhysiologicMechanisms in the Etiology of Spondylolysis. Presented at the 38thAnnual Conference on Engineering in Medicine and Biology, September 30-October 2, 1985, Chicago, Illinois.Patwardhan AG, Lorenz M, Meade KP, Knight GW, Dvonch V: Mechanisms ofPars Fracture in the Etiology of Spondylolysis. Presented at the 20thAnnual Meeting of the Scoliosis Research Society, September 17-20, 1985,Coronado, California.Patwardhan AG, Bunch WH, Vanderby R, Meade KP, Knight GW: ABiomechanical Analysis of Spinal Fusion in Combined Thoracic and LumbarIdiopathic Scoliosis. Presented at the 31st Annual Meeting of theOrthopaedic Research Society, January 21-24, 1985, Las Vegas, Nevada.Zindrick MR, Hopkins G, Knight GW, Hopkins C, Patwardhan AG, Bunch WH:The Effect of Lateral Talar Shift Upon the Biomechanics of the AnkleJoint. Presented at the 31st Annual Meeting of the Orthopaedic ResearchSociety, January 21-24, 1985, Las Vegas, Nevada.Behr J, Pinzur M, Knight GW, Linnik W, Patwardhan AG: Gore-Tex AugmentedPatellar Tendon Repairs in a Canine Model. Presented at the 31st AnnualMeeting of the Orthopaedic Research Society, January 21-24, 1985, LasVegas, Nevada.Zindrick MR, Hopkins G, Knight GW, Hopkins C, Patwardhan AG, Bunch WH:The Effects of Mal-Union Upon the Biomechanical Properties of the AnkleJoint. Presented at the 52nd Annual Meeting of the American Academy ofOrthopaedic Surgeons, January 1985, Las Vegas, Nevada.Patwardhan AG, Orenstein E, Boscardin JB, Knight GW, Hoyt JS, Weisel HL,Lorenz M: Facet Loading in Spinal Segments with Spina Bifida:Implications to the Etiology of Spondylolysis. Presented at the 19thAnnual Meeting of the Scoliosis Research Society, September 19-22, 1984,Orlando, Florida.Meade KP, Bunch WH, Vanderby R, Patwardhan AG, Knight GW: Progression ofUnsupported Curves in Adolescent Idiopathic Scoliosis. Presented at the19th Annual Meeting of the Scoliosis Research Society, September 19-22,1984, Orlando, Florida.Patwardhan AG, Bunch WH, Vanderby R, Meade KP, Knight GW: Selection ofFusion Levels in Combined Thoracic and Lumbar Idiopathic Scoliosis- ABiomechanical Analysis. Presented at the 19th Annual Meeting of theScoliosis Research Society, September 19-22, 1984, Orlando, Florida.Orenstein E, Patwardhan AG, Knight GW, Gross M, Gogan WJ, Boscardin JB:A Biomechanical Study of the Effect of Chymopapain Injection, Laminectomyand Discectomy on Load Bearing Characteristics of Lumbar Facets.

34. Presented at the 30th Annual Meeting of the Orthopaedic Research Society,February 1984, Atlanta, Georgia.Gogan WJ, Knight GW, Patwardhan AG, Plioplys A, Vanderby R: A Three-Dimensional Morphological Study of the Thoracic Spine Facets. Presentedat the 30th Annual Meeting of the Orthopaedic Research Society, February1984, Atlanta, Georgia.Zindrick MR, Knight GW, Gogan WJ, Patwardhan AG, Vanderby R, Hoyt JS:The Effect of Fibular Shortening and Rotation on the Biomechanics of theTalocrural Joint During Various Stages of Stance Phase. Presented at the30th Annual Meeting of the Orthopaedic Research Society, February 1984,Atlanta, Georgia.Gogan WJ, Knight GW, Patwardhan AG, Plioplys A, Vanderby R: Three-Dimensional Orientation of Thoracic Spine Facets. Presented at theAmerican Society of Mechanical Engineers Winter Annual Meeting, November1983, Boston, Massachusetts.Bunch WH, Patwardhan AG, Vanderby R, Knight GW: Stability of ScolioticSpines. Presented at the 18th Annual Meeting of the Scoliosis ResearchSociety, September 28-October 1, 1983, New Orleans, Louisiana.Patwardhan AG, Bunch WH, Vanderby R, Knight GW: Adding-On in ParalyticScoliosis. Presented at the 18th Annual Meeting of the Scoliosis ResearchSociety, September 28-October 1, 1983, New Orleans, Louisiana.Bunch WH, Patwardhan AG, Vanderby R: Influence of Curvature on theEffectiveness of the Milwaukee Brace. Presented at the IV th WorldCongress of the International Society for Prosthetics and Orthotics,September 5-9, 1983, London.Daniele M, Vanderby R, Patwardhan AG: An Interactive Algorithm toIdentify In Vivo Segmental Stiffness Properties for a Three-DimensionalSpine Model. Presented at the IX International Congress of Biomechanics,August 1983, Waterloo, Ontario, Canada.Patwardhan AG, Vanderby R, Bunch WH: A Mathematical Analog of Spine-Orthosis Systems. Presented at the IX International Congress ofBiomechanics, August 1983, Waterloo, Ontario, Canada.Knight GW, Patwardhan AG, Zindrick MR, Gogan WJ, Vanderby R: The Effectsof Fibular Shortening on the Biomechanics of the Ankle Joint. Presentedat the Sixth Annual Conference on Rehabilitation Engineering, June 1983,San Diego, California.Vanderby R, Patwardhan AG: A Computer-Aided Design Approach for OptimalDesign of a Wheelchair Frame- A Preliminary Report. Presented at theSixth Annual Conference on Rehabilitation Engineering, June 1983, SanDiego, California.Knight GW, Patwardhan AG, Zindrick MR, Gogan WJ: A Biomechanical Studyof Fibular Malunion. Presented at the 1983 Biomechanics Symposium,American Society of Mechanical Engineers, June 1983, Houston, Texas.Lorenz M, Patwardhan AG, Vanderby R, Keagy R: Congenital Absence ofLumbar Articular Facets- A Biomechanical Study. Presented at the 29thAnnual Meeting of the Orthopaedic Research Society, March 1983, Anaheim,California.Chmell S, Patwardhan AG, Vanderby R, Light TR: Three-DimensionalOrientation of Articular Facet Surfaces of the Lower Cervical Spine.Presented at the 29th Annual Meeting of the Orthopaedic Research Society,March 1983, Anaheim, California.Patwardhan AG, Vanderby R, Lorenz M: Load Bearing Characteristics ofLumbar Facets in Axial Compression. Presented at the ASME Winter AnnualMeeting, November 1982, Phoenix, Arizona.

35. Patwardhan AG, Vanderby R, Kynast L, DiMonte P, Robinson C, Trimble J: ANovel Orthotic Device for Head-Neck Tremors in a Patient with CerebellarDysfunction. Presented at the Fifth Annual Conference on RehabilitationEngineering, August 22-26, 1982, Houston, Texas.Lorenz M, Patwardhan AG, Vanderby R: Load Bearing Characteristics ofLumbar Facets with Implications to Low Back Pain. Presented at the FifthAnnual Conference on Rehabilitation Engineering, August 22-26, 1982,Houston, Texas.Lorenz M, Patwardhan AG, Vanderby R: Load Bearing Characteristics ofLumbar Facets in Normal and Surgically Altered Spinal Segments.Presented at the Ninth Annual Meeting of the International Society forthe Study of the Lumbar Spine, June 1982, Toronto, Ontario, Canada.Patwardhan AG, Soni AH, Sullivan JA, Gudavalli MR: Axode Analysis ofLumbar Spine Motion Segments. Presented at the Seventh AppliedMechanisms Conference, December 7-9, 1981, Kansas City, Missouri.Patwardhan AG, Vanderby R: A Three-Dimensional Large-DisplacementContinuum Model of the Human Spine. Presented at the American Society ofMechanical Engineers Winter Annual Meeting, November 1981, WashingtonD.C.Patwardhan AG, Bunch WH, Soni AH, Sullivan JA: The Effect of SpinalFusion on Biomechanics of Adjacent Segments- A Preliminary Report.Presented at the 16th Annual Meeting of the Scoliosis Research Society,September 16-18, 1981, Montreal, Quebec, Canada.Patwardhan AG: An Instrumented Linkage Transducer for PreciseMeasurement of Vertebral Motion. Presented at the 16th Annual Meeting ofthe Scoliosis Research Society, September 16-18, 1981, Montreal, Quebec,Canada.Patwardhan AG: Describing Vertebral Motion Using Analytical RuledSurfaces and Their Mechanical Analogs. Presented at the Ninth NortheastConference on Bioengineering, March 19-20, 1981, Rutgers University, NewBrunswick, New Jersey.Patwardhan AG, Soni AH, Sullivan JA: A General Method to Locate a Bodyin Three-Dimensional Space Using X-Ray Exposures in Two Oblique Planes.Presented at the Sixth Applied Mechanisms Conference, October 11-13,1979, Denver, Colorado.Patwardhan AG, Soni AH: Signature Analysis of Vertebral Motion Data inDiscrete Form. Presented at the 31st Annual Conference on Engineering inMedicine and Biology, October 21-25, 1978, Atlanta, Georgia.Patwardhan AG, Soni AH: A Two-Stage Graphical Solution for Rigid BodyGuidance with Watts Six-Link Mechanism. Presented at the Fifth AppliedMechanisms Conference, November 6-9, 1977, Oklahoma City, Oklahoma.Invited Seminars:Response of the Human Spine Under a Follower Load- A New Concept of InVivo Spinal Stability Department of Neurological Surgery, LoyolaUniversity Medical Center, November 1999Biomechanics of Implants and Orthoses for Thoracolumbar InjuriesAnnual Meeting of the American Academy of Orthotists and Prosthetists,March 1999, New Orleans, LA. Topics in Spine Biomechanics ResearchUniversity of Alberta, Edmonton, Alberta, April 1998

36. A Follower Load Increases the Load Carrying Capacity of the LumbarSpine in Axial Compression- Implications to Muscle Coactivation andStabilityInstitute for Spine & Biomedical Research Weekly ConferencePlano, Texas, November 14, 1997 Biomechanics of Orthotic Treatment for Spinal DisordersProsthetic/Spinal Cord Injury Clinical Practices in a ChangingEnvironment, Course No. 97.SC.VP, Las Vegas, Nevada, July 22-24, 1997"Biomechanics of