Complete duplication of an accessory first ray.

A case report of an accessory metatarsal located between the first and second metatarsals is presented. This rudimentary accessory ray caused a splay foot deformity that made it difficult for the patient to walk comfortably in shoes. In reviewing the literature, there has been very little reported on the complete duplication of a metatarsal, as described by Venn-Watson. The authors will discuss the proper treatment of, and review the classifications associated with, this deformity.