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Clinical Radiology of the Clinical Radiology of the

HorseHorse

Dr. Tóth PéterDr. Tóth Péter

SZIESZIE--ÁOTK Clinic for Large AnimalsÁOTK Clinic for Large Animals

Distal phalanxDistal phalanx

�� LateromedialLateromedial viewview

�� Dorsopalmar/plantarodorsalDorsopalmar/plantarodorsal viewview

�� DorsoproximalDorsoproximal--palmarodistal oblique viewpalmarodistal oblique view

�� PalmaroproximalPalmaroproximalisis -- palmarodistal palmarodistal oblique viewoblique view

Distal phalanxDistal phalanx

�� Wooden blockWooden block

10-15 cm

Distal phalanx:Distal phalanx: dorsopdorsoproximalroximal--

palpalmarmarodistal obliqueodistal oblique

�� Solar surface is perpendicular Solar surface is perpendicular

to the floorto the floor

�� Central beam: focus on the Central beam: focus on the

coronary bandcoronary band

Distal phalanxDistal phalanx: dorsopalmar: dorsopalmar (weight (weight

bearing)bearing)Distal phalanxDistal phalanx: :

palmpalm..proxprox.. –– palmpalm.d.disist. obliquet. oblique

�� 4545°° --7070°°

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Pathological changesPathological changes

�� osteitisosteitis�� asepaseptictic

Pathological changesPathological changes

�� OOsteitissteitis�� septisepticc

Pathological changesPathological changes

�� KeratomKeratomaa

PathologicalPathological changeschanges

�� HoofHoof abscessabscess

Pathological changesPathological changes

�� cystcyst

Pathological changesPathological changes

�� Ossification of Ossification of the cartilagethe cartilage

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Pathological changesPathological changes

�� fracturefracture

Pathological changesPathological changes

�� Proc. extensorius Proc. extensorius fracturefracture

Pathological changesPathological changes

�� Periarticular Periarticular osteophyteosteophyte

Pathological changesPathological changes

�� LaminitisLaminitis

A

B

A/B= 25-28%

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Navicular boneNavicular bone

�� Appropriate preparationAppropriate preparation

�� viewsviews

�� LateromedialLateromedial

�� OOxspringxspring

�� SkylineSkyline (tangential)(tangential)

LLateromedialateromedial viewview

�� Where to center Where to center the xthe x--ray beam?ray beam?

OxspOxsprringing viewview

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SSkyline kyline view view (palmaroprox.(palmaroprox.--palmarodist. palmarodist.

obliqueoblique))

Navicular diseaseNavicular disease

Navicular diseaseNavicular disease

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PIPJPIPJ

�� LM LM

�� DP DP

�� D45LPMOD45LPMO

�� D45MPLOD45MPLO

PIPJPIPJ PIPJPIPJ

FetlockFetlock Pathological changesPathological changes

�� OCDOCD

OCD

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OCDOCD Chip Chip fracturefracture

BirkelundBirkelund--fracturefractureD30D30°°Pr70 Pr70 °°LL--PaDiMO/D30PaDiMO/D30°°Pr70Pr70°°MM--

PaDiLOPaDiLO

BirkelundBirkelund--fracturefracture

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Pathological changesPathological changes

��physitisphysitis

Pathological changesPathological changes

�� sesamoiditissesamoiditis

Pathological changesPathological changes

�� fracturesfractures

ArthrosisArthrosis

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ArthrosisArthrosis--OAOA--DJDDJD CarpusCarpus

Flexed LMFlexed LM SkylineSkyline

8585°°

5555°°

3535°°

Pathological changesPathological changes

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?? Osteochondroma, OCDOsteochondroma, OCD

??ElbowElbow

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ShoulderShoulder

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Radiological anatomy of the hock I.Radiological anatomy of the hock I.

Radiological anatomy of the hock II.Radiological anatomy of the hock II. Radiological anatomy of the hock III.Radiological anatomy of the hock III.

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Osteochondrosis dissecansOsteochondrosis dissecans

Bone spavinBone spavin

StifleStifle SkylineSkyline

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OCDOCD OCDOCD

HeadHead

�� Views: LL, VD/DV, obliquesViews: LL, VD/DV, obliques

�� Large cassettesLarge cassettes

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NeckNeck

�� LLLL

�� Large cassettesLarge cassettes

WobblerWobbler--syndromesyndrome

�� Appropriate measurementsAppropriate measurements�� MSD of the vertebral canal/the widest point of the MSD of the vertebral canal/the widest point of the

cranial aspect of the vertebral body (C4cranial aspect of the vertebral body (C4--C6)C6)�� <48%: +, myelography to identify the site of the lesion<48%: +, myelography to identify the site of the lesion�� 48%48%--56%: +/56%: +/--, myelography to confirm or exclude CSM, myelography to confirm or exclude CSM�� >56%: >56%: --

C5-6 Other pathological changesOther pathological changes

�� OAOA

�� SubluxatioSubluxatio

�� OsteomyelitisOsteomyelitis

�� DiscospondylitisDiscospondylitis

�� NeoplasiaNeoplasia

�� AbscessAbscess

�� FracturesFractures

Thoracolumbal regionThoracolumbal region

�� Th8Th8--L3L3

�� Laterolateral and oblique viewsLaterolateral and oblique views

�� Large cassettesLarge cassettes

�� Aluminium wedge filterAluminium wedge filter

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Oblique viewsOblique views

Kissing spinesKissing spines OAOA

DiscospondylitisDiscospondylitis

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Abdominal cavityAbdominal cavity

�� LL/VDLL/VD

�� Foals or poniesFoals or ponies

ThoraxThorax

�� LLLL

�� Large cassettesLarge cassettes

Thank you for your attention!Thank you for your attention!