Abstract
Osteoarthrosis (OA) of the antebrachiocarpal joint from 7 riding horses is described. The horses were old mares and developed severe OA, with ankylosis in some of the joints. The lesions were bilateral, and the owners noticed the lameness in a late event. The cause of severe OA in these mares is not clear. The fact that OA was bilateral indicates that a single traumatic injury is unlikely as an etiologic factor. Considering the severe joint lesions it took long time before the horse-owners noticed the lameness. It is discussed if the threshold of pain is higher in the antebrachiocarpal joint compared with the middle carpal joint.
Sammanfattning
Osteoarthros i övre karpalleden från sju ridhästar.
Sju äldre ridston med en svårartad, bilateral osteoarthros i radiokarpalleden har undersökts kliniskt upprepade gånger under åren 93-98. Symtomen dominerades av en tilltagande ledstyvhet, smärta vidsammanböjning, konturstörning framtill runt leden samt hälta. Trots vila förvärrades ledbesvären ochsamtliga hästar avlivades efter en tid. Vid makroskopisk och radiologisk undersökning postmortalt påvisades förlust av ledbrosk distalt på radius och proximalt på radiokarpalbenet, ledrandsosteofyter, subkondral benscleros samt förtjockad ledkapsel med villiproliferationer. I samtliga fall har det dröjt länge innan ägarna noterat hälta. Detta kan tala för att smärttröskeln i radiokarpalleden är högre jämförtmed den i interkrapallederna. Orsaken till ostearthrosen i dessa fall har ej kunnat fastställas och uppgifter om predisponerande faktorer saknas.
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References
Bertone AL, Schneiter HL, Turner AS, Shoemaker RS: Pancarpal arthrodesis for treatment of carpal collapse in the adult horse. A report of two cases Vet Surg. 1989, 18: 353-9.
Bramlage LR, Schneider RK, Gabel AA: A clinical perspective on lameness originating in the carpus. Equine Vet J Suppl. 1988, 6: 12-8.
Firth EC, Hartman W: An in vitro study on joint fitting and cartilage thickness in the radiocarpal joint of foals. Research in Veterinary Science. 1983, 34: 320-6.
Johnston C, Drevemo S, Roepstorff L: Kinematics and kinetics of the carpus. Equine Vet J Suppl. 1997, 23: 84-8.
McIlwraith CW, Yovich JV, Martin GS: Arthroscopic surgery for the treatment of osteochondral chip fractures in the equine carpus. J Am Vet Me Assoc. 1987, 191: 531-40.
Norrdin RW, Kawacak CE, Capwell BA, McIlwraith CW: Subchondral bone failure in an equine model of overload arthrosis. Bone. 1998, 22: 133-9. 10.1016/S8756-3282(97)00253-6.
Palmer SE: Prevalence of carpal fractures in Thoroughbred and Standardbred racehorses. J Am Vet Med Assoc. 1986, 188: 1171-3.
Palmer SE, Bertrone AL: Joint structure, biochemistry and biochemical disequilibrium in synovitis and equine joint disease. Equine Vet J. 1994, 26: 263-77.
Specht TE, Nixon AJ, Colahan PT, Moore BG, Brown MP: Subchondral cyst-like lesions in the distal portion of the radius of four horses. J Am Vet Med Assoc. 1988, 193: 949-52.
Acknowledgements
The authors would like to thank Drs Ingela Liwång and Nino Gerbino for valuable discussions and Bengt Ekberg for excellent photographic assistance. The study was funded by the Sten-Erik Olsson foundation.
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Stina Ekman, Department of Pathology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Box 7028, S-750 07 Uppsala, Sweden. E-mail: Stina.Ekman@pat.slu.se, fax: 46-18-67 35 32.
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Magnusson, LE., Ekman, S. Osteoarthrosis of the Antebrachiocarpal Joint of 7 Riding Horses. Acta Vet Scand 42, 429 (2001). https://doi.org/10.1186/1751-0147-42-429
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DOI: https://doi.org/10.1186/1751-0147-42-429