Upload
dinhtram
View
223
Download
3
Embed Size (px)
Citation preview
A. Barg, M. Lyman, S.C. Morris, C.L. Saltzman
Primaryvs.RevisionAnkleArthrodesis:ComparisonofFusion
andComplicationRates
Department of Orthopaedics
AOFAS Annual Meeting, Toronto, Ontario, 20th‐23rd July 2016
Ankle arthrodesis is the standard treatment option in patients with end‐stage ankle osteoarthritis1‐3
Osseous non‐union or delayed union are major complications following ankle arthrodesis4,5
The risk of non‐union in patients with primary open ankle arthrodesis is 9%6
Revision ankle arthrodesis is the most common salvage procedure in patients with osseous non‐union7‐11
Only few studies have evaluated clinical outcome in patients with revision ankle arthrodesis
AnkleArthrodesisIntroduction Patients and Methods Results Discussion
The objectives of this retrospective study were to compare patients with primary vs. revision tibiotalar arthrodesis:
– demographics– surgical technique– postoperative fusion rates– postoperative complication rates
ObjectivesIntroduction Patients and Methods Results Discussion
Study design– patient identification by searching the University of Utah Department of Orthopaedics’ medical database between March 2002 and November 2014
Patients:– 455 ankle arthrodeses in total
• 385 ankles with primary arthrodesis• 70 ankles with revision arthrodesis
– 234 male and 221 female with a mean age of 56±15 years (range, 18‐89 years)
– both patient groups were compared with regard to demographics and comorbidities
PatientsIntroduction Patients and Methods Results Discussion
SurgicalTechniqueIntroduction Patients and Methods Results Discussion
Technique Primary AD Revision AD P Value
Approach open/AS 322/63 70/0 <0.001
Approachanteriorposteriorlateralmedialmed./lat.
12822201331
19113325
0.021
Main fixationscrewsplateblade plateIM nailext. fix.
25766201824
102319711
<0.001
Autograft use 275/110 49/21 0.886
Allograft use 107/278 38/32 <0.001
BMP use 44/341 30/40 <0.001
SurgicalTechniqueIntroduction Patients and Methods Results Discussion
A 53‐year‐old female patient who presented with tibiotalar non‐union 9.6 months following open tibiotalar arthrodesis with screw fixation. Revision ankle arthrodesis was performed using an anterior plate fixation.
A 38‐year‐old female patient who presented with tibiotalar non‐union 7.5 months following arthroscopic tibiotalar arthrodesis with screw fixation. Revision ankle arthrodesis was performed using screws fixation.
RadiographicAssessmentIntroduction Patients and Methods Results Discussion
Parameter Primary AD Revision AD P ValueMedial distal tibial angle 87.8 ± 6.2 88.5 ± 6.0 0.466
Tibiotalar tilt ‐0.7 ± 9.5 ‐1.3 ± 10.5 0.747Calcaneal moment arm ‐4.4 ± 21.9 7.1 ± 17.3 0.023
Anterior distal tibial angle 82.1 ± 7.1 83.5 ± 9.6 0.247
The mean time to final follow‐up was 38±27 months (range, 12‐150 months)
OsseousUnionIntroduction Patients and Methods Results Discussion
Parameter Primary AD Revision AD P ValueMean follow‐up (range) 38 (12‐150) 40 (12‐126) 0.736
Osseous union yes/no/delayed 251/37/97 49/6/15 0.735
Mean time to osseous union (range)
5.0 (1.3‐18.2) 4.7 (1.9‐12.3) 0.900
The complication rate was comparable in both groups The rate of secondary surgeries was comparable in both groups:
– removal of hardware was the most common secondary procedure in both groups
ComplicationsIntroduction Patients and Methods Results Discussion
Parameter Primary AD Revision AD P ValueWound complications sf/deep/none
76/26/283 15/7/48 0.565
Thrombemboliccomplications PE/DVT/none
2/10/373 1/1/68 0.583
Return to OR 127/258 29/41 0.137
The rate of osseous union was comparable in both groups with 90.4% and 91.4% in patients with primary and revision arthrodesis, respectively (P = 0.735)
Similar to the current literature:– Easley et al.,10 45 patients, union rate 88.9%– O’Connor et al.,11 82 patients, union rate 77%
In our study, patients with revision ankle arthrodesis has similar complication rate as patients with primary ankle arthrodesis
DiscussionIntroduction Patients and Methods Results Discussion
1. Nihal et al., Foot Ankle Surg 2008; 14:1‐102. Rammelt et al., Foot Ankle Int 2013; 34:1245‐553. Shah & Younger, Foot Ankle Clin 2011; 16:115‐364. Cooper, Clin Orthop Relat Res 2001; 391:33‐445. Kitaoka, Instr Course Lect 1999; 48:255‐616. Chalayon et al., Foot Ankle Int 2015; 36:1170‐97. Tulner et al., Acta Ortho 2011; 82:250‐28. Verhulst & Swierstra, Acta Ortho 2009; 80:256‐89. Cheng et al., Foot Ankle Int 2003; 24:321‐510. Easley et al., J Bone Joint Surg Am 2008; 90:1212‐2311. O’Connor et al., Foot Ankle Int 2016, epub ahead of print
References