Bipartite tibial sesamoid and hallux abducto valgus deformity: a previously unreported correlation.

A retrospective radiographic study was undertaken to determine the incidence of a bipartite tibial sesamoid and its relationship in hallux abducto valgus (HAV) deformity. It was found that the incidence of a bipartite tibial sesamoid associated with HAV deformity was twice as frequent than a bipartite tibial sesamoid in a general foot population. The authors conclude that the tibial sesamoid plays an important role in the development of HAV deformity.