Carpal accessorioulnar joint fusion in a dog

Traumatically induced lateral subluxation of the accessory carpal bone in a dog resulted in chronic lameness with weight-bearing instability. Accessorioulnar carpal joint arthrodesis was performed, using one interfragmentary lag screw and a cancellous bone graft. The lameness subsided and clinical function has remained excellent for 32 months. Low-grade osteoarthritis of other carpal joints has progressed, but may relate to other damage sustained at the time of initial injury. Focal intercarpal joint arthrodesis in this dog provided clinical function that far surpassed that of pancarpal arthrodesis, the logical surgical alternative for such an injury.