Carpal Arthrodesis in Dogs

Abstract

Nine dogs, each with a severe carpal sprain injury, were treated by arthrodesis (2 bilateral). The same surgical technique with articular cartilage curettage, autologous bone grafting and compression plate fixation was used for each carpus. Initial treatment with external coaptation had been unsuccessful, but arthrodesis always resulted in resolution of the lameness. Complications included fracture of the compression plate (1 case) and loosening of the implants (2 cases).

Pancarpal and pantarsal arthrodesis applications using compression plates in dogs

“…While duration of our bandages was shorter than other studies, with the exception of the plate breaking in one case, no other complication was encountered with possible relation to the length of this duration. Continuing external fixation for a long time may cause muscle atrophy, pressure necrosis and stiffening in the other joints (Johnson, 1980). While muscle atrophy occurs in some cases, we think that, this is related to both the extremity being kept in a bandage and also it not being used.…”

“…Johnson (1980) has recommended that, splints should be continued for at least 6-10 weeks. In our study, an aluminium supported bandage was used for 3-4 weeks, followed by a bandage with thick co�on padding for 2 weeks.…”

“…To reduce these risks, 2-2.7 mm and 2.7-3.5 mm hybrid plates may be used (Fe�ig et al, 2002). Plate application to only the third metacarpal and metatarsal bones may cause stress and bone fractures (Johnson, 1980). Compression plates were used in this study.…”

“…Ankylosis will develop unless a sufficient amount of subchondral bone cannot be exposed. Cancellous bone gra�s must be applied to the joint space in order to increase healing of the bone (Johnson, 1980). Selection of the plate to be used for arthrodesis is important.…”

“…Selection of the plate to be used for arthrodesis is important. If the plate is too small it may break, if it is too large it will cause structural weakening of the bone (Johnson, 1980). For the purpose of pancarpal and pantarsal arthrodesis, external fixation may be applied, particularly in cases of shearing injuries.…”