The bipartite tarsal scaphoid.

Brailsford introduced the descriptive term “listhesis of the tarsal scaphoid” to describe the cinicopathological changes associated with congenital bipartition ofthis bone. This uncommon condition involves the separation and displacement oftwo scaphoid fragments, producing a fixed flat foot deformity, which eventually becomes symptomatic. Six cases are described, the lesion being bilateral in three. No particular definitive treatment is advocated, other than symptomatic management. Brailsford (1953) used the descriptive term “listhesis of the tarsal scaphoid” to describe an uncommon clinical entity associated with a flat foot. This lesion which is also called bipartite scaphoid was first described by Muller (1927, 1928) and was initially thought to be the end-result of childhood K#{246}hler’s disease. The lesion was eventually shown to be a distinct entity (Brailsford 1935; Zimmer 1937). After his initial report of five cases, Brailsford subsequently included some 20 cases of the lesion in his textbook (Brailsford 1953). The purpose of this paper is to reiterate the features of this entity and add a further six cases to the reported literature.