An unusual case of postaxial polydactyly of the foot treated by metatarsal transfer.

Abstract

Postaxial polydactyly is a relatively rare congenital deformity. We present a

unique unusual fourth metatarsal type polydactyly in which the extra bone from

the fourth metatarsal bone articulated with the most lateral ray proximal

phalanx. We discuss the surgical management of this problem using a bone transfer

from the extra metatarsal bone within the midfoot. This is the first reported

case of fourth metatarsal-type polydactyly treated by bone transfer of the extra

metatarsal bone and internal plate fixation to recover normal articulation. The

normal orientation of the metatarsophalangeal joint, alignment, and cosmesis are

important determinants when selecting the bone to be excised in cases of lateral

ray foot polydactyly.