The Foot and Ankle in Multiple Hereditary Exostoses

Abstract

Twenty-two cases of multiple hereditary exostoses revealed pathological changes in two areas: the first group caused by epiphyseal disturbances, and the second group due to mechanical problems created by the exostoses. The epiphyseal disturbances resulted in ankle valgus, shortened metatarsals, and angular deformities of the necks of the metatarsals. The exostoses produced local tenderness, synostosis of the medial subtalar facet resulting in loss of subtalar motion, and asymptomatic synostosis of the lower tibial fibular syndesmosis.