Free microvascular transfer of second toe ray and serratus anterior muscle for management of thumb loss at the carpometacarpal joint level.

A 50-year-old machine operator suffered traumatic amputation of the thumb, ring, and small fingers. The thumb had been amputated at the carpometacarpal joint and was reconstructed 6 months later by microneurovascular transplantation of the second toe including the second metatarsal. Opposition was provided and the first web space was released at a second stage by reconstruction with the lowest two digitations of the serratus anterior muscle covered with a split-thickness skin graft.