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Flexor Carpi Ulnaris Tendonopathy. Accession # 105218 Erica Fields, DVM. Dakota Vincent. 7 yo FS Weimaraner Developed ST swelling – left caudal antebrachium – 1 mo prior to presentation, after playing outside rDVM aspirated as mesenchymal neoplasia. Radiographs. - PowerPoint PPT Presentation
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Flexor Carpi Ulnaris Flexor Carpi Ulnaris TendonopathyTendonopathy
Accession # 105218Accession # 105218
Erica Fields, DVMErica Fields, DVM
Dakota VincentDakota Vincent
7 yo FS Weimaraner7 yo FS WeimaranerDeveloped ST swelling – left caudal Developed ST swelling – left caudal
antebrachium – 1 mo prior to presentation, antebrachium – 1 mo prior to presentation, after playing outsideafter playing outside
rDVM aspirated as mesenchymal rDVM aspirated as mesenchymal neoplasianeoplasia
RadiographsRadiographs
Chip fractures associated with the radial Chip fractures associated with the radial carpal bonecarpal bone
Soft tissue swelling proximal to accessory Soft tissue swelling proximal to accessory carpal bonecarpal bone
No evidence of bony lysisNo evidence of bony lysis
LATERAL
DORSOPALMAR
OBLIQUE
UltrasoundUltrasound
Allows better examination of soft tissue Allows better examination of soft tissue structures (muscle, tendon, ligament)structures (muscle, tendon, ligament)
Good spatial resolutionGood spatial resolutionCan assess blood flowCan assess blood flowBiopsy guidanceBiopsy guidance
Kuan, et al, 2007 and Whitelock, 2001Kuan, et al, 2007 and Whitelock, 2001
AnatomyAnatomy
Flexor carpi ulnarisFlexor carpi ulnarisTwo bellies (ulnar and humeral heads)Two bellies (ulnar and humeral heads)Becomes flat tendon, inserts on acc. carpalBecomes flat tendon, inserts on acc. carpalSits lateral and deep to SDFSits lateral and deep to SDFFlexes and abducts carpusFlexes and abducts carpus
Prevention of hyperextensionPrevention of hyperextensionPalmar fibrocartilagePalmar fibrocartilageFlexor retinaculumFlexor retinaculumPalmar ligamentsPalmar ligaments
AnatomyAnatomy
Denny, 2004Denny, 2004
AnatomyAnatomy
Tendons in generalTendons in generalCollagen fibrils surround parallel rows of Collagen fibrils surround parallel rows of
fibroblastsfibroblastsSymmetrical crimpSymmetrical crimpParatenon and epitenon contain blood supplyParatenon and epitenon contain blood supplySheathed when crossing jointsSheathed when crossing joints Injury: capillary hemorrhage, ischemia, Injury: capillary hemorrhage, ischemia,
necrosis, fluid accumulation, granulation necrosis, fluid accumulation, granulation tissuetissue
Denny, 2004Denny, 2004
Strain InjuryStrain Injury
Injury to musculotendonous unitInjury to musculotendonous unitFirst through third degreesFirst through third degreesCan be acute or due to chronic stresses Can be acute or due to chronic stresses
(e.g. racing Greyhounds)(e.g. racing Greyhounds)Acute treatment: rest, cold, immobilization Acute treatment: rest, cold, immobilization
(3 wks)(3 wks)Rehabilitation needed later to maintain Rehabilitation needed later to maintain
functionfunctionSurgical tx needed for rupturesSurgical tx needed for ruptures
Kuan, et al. 2007Kuan, et al. 2007
FCU InjuryFCU Injury
Usually seen in racing GreyhoundsUsually seen in racing GreyhoundsReported in 1 WeimaranerReported in 1 WeimaranerOur surgeons report seeing it in other Our surgeons report seeing it in other
WeimaranersWeimaranersRepetitive (or acute?) stress injuryRepetitive (or acute?) stress injury
ReferencesReferences Dee JF and Dee LG. 1985. Fractures and dislocations Dee JF and Dee LG. 1985. Fractures and dislocations
associated with the racing greyhound. In Textbook of associated with the racing greyhound. In Textbook of Small Animal Orthopaedics. IVIS, Ithaca, NY. Small Animal Orthopaedics. IVIS, Ithaca, NY. www.ivis.orgwww.ivis.org
Denny HR. 2004. Tendon injuries. Proceedings of the Denny HR. 2004. Tendon injuries. Proceedings of the 2929thth World Congress of the World Small Animal World Congress of the World Small Animal Veterinary Association. Veterinary Association. www.vin.comwww.vin.com
Kuan SY, Fearnside SM, Black AP, and Allan GS. 2007. Kuan SY, Fearnside SM, Black AP, and Allan GS. 2007. Flexor carpi ulnaris tendonopathy in a Weimaraner. Flexor carpi ulnaris tendonopathy in a Weimaraner. Australian Veterinary Journal; 85: 401-404.Australian Veterinary Journal; 85: 401-404.
Whitelock R. 2001. Conditions of the carpus in the dog. Whitelock R. 2001. Conditions of the carpus in the dog. Companion Animal Practice. Jan. 01.Companion Animal Practice. Jan. 01.