Reconstructing weight-bearing surfaces: digital pad transposition.

The paw pads of dogs and cats are specialized skin structures that provide cushioned, durable, weight-bearing surfaces. Otherwise normal limbs may be rendered useless when pad tissue is lost because of trauma or tumor resection. This article reviews previously described reconstructive techniques involving the movement of pad tissue into weight-bearing defects. In addition, a case series of single-stage digital pad transfer to replace all or part of metacarpal or metatarsal defects is reported. This technique was predictably successful with minimal complications in conjunction with complete tumor resection, although results in two cases of severe paw trauma were less favorable.