Management of Lower Extremity Deformity in Children with Hereditary Multiple Exostoses

(1)The most common lower extremity malalignment deformities secondary to hereditary multiple exostoses (HME) are coxa valga of the hips, genu valgum or varum of the knees, and ankle valgus.(2)Temporary hemiepiphysiodesis (growth guidance) using transphyseal screws, staples, and tension band plates has become a mainstay for treating deformity in children with HME, but there is still much unknown.(3)Tibial deformities are largely proximal and/or distal valgus angulations, which are associated with short fibulas.(4)Ankle valgus should be addressed to prevent late ankle pain and degeneration.