Luxation of the radial carpal bone in a cat

Abstract

A case of radial carpal bone luxation in the cat and its management is described. Open reduction was performed and surgically maintained, in combination with repair of rupture of the short radial collateral ligament and joint capsule. The carpus was supported for one month following surgery by application of transarticular external fixation. Four months after treatment the cat was sound, despite evidence of degenerative joint disease. The mechanism of luxation appears to be analogous to that seen in the dog.

Congenital Ulnar Carpal Bone Luxation in a Miniature Donkey Treated by Pancarpal Arthrodesis

“…16 Similarly, traumatic luxation of the ulnar carpal bone is unlikely in our case because these are typically associated with some degree of soft tissue swelling and joint effusion when they occur in small animals and humans. [17][18][19] Finally, no case of individual carpal bone luxation or dislocation could be found in the equine literature without associated complex carpal fracture. 20 In this unusual case of severe unstable carpal valgus due to luxation of the ulnar carpal bone, pancarpal arthrodesis using two small LCPs proved efficient in fusing the carpal joints and offering a good postoperative comfort.…”

Carpal joint injuries in cats – an epidemiological study

“…Injuries of the carpal joint seem to occur rarely in cats (4,6,8,9). In feline high-rise syndrome (HRS) carpal joint injuries (CJI) have been inconsistently described.…”

“…Data concerning signalment is also scarce. When combining results of a study that examined 20 cats with CJI and the cats of case reports, 95% of these were Domestic Shorthaired cats while other breeds were affected less commonly (4,6,8,9,13). Cats with CJI in these reports were between 0.8-and 12-years-old, with a mean age of 5.2 years; additionally more males than females had a CJI (4,6,8,9,13).…”

“…In these reports, the type of carpal joint injury was a hyperextension in 14 cases, a luxation or subluxation in 13 cases, or a combination of antebrachiocarpal and radioulnar luxation in one case (4,8,10,13,15). There is only one publication detailing a cat with a luxation of the radial * Authors contributed equally carpal bone (9). The carpus was found to be more commonly affected by luxation than in other joints in cats with HRS, however the type of carpal joint injury was not reported in this study (10).…”

High field magnetic resonance imaging anatomy of feline carpal ligaments is comparable to plastinated specimen anatomy

“…This is often manifested as hyperextension injury at the level of the carpometacarpal joint, and medial collateral ligament sprain . Reports in the literature on the diagnosis and treatment of feline carpal ligament injuries are limited to case reports and a few case series focusing on epidemiology and outcomes following treatment with pan‐carpal or partial carpal arthrodesis …”