Lateral Hindfoot Impingement After Nonunion of Fracture of the Lateral Process of the Talus.

Fracture of the lateral process of the talus is a relatively uncommon ankle injury, and the diagnosis is easily delayed. Lateral hindfoot impingement is characteristically related to chronic hindfoot valgus malalignment, with lateral ankle pain localized to the subtalar region. In a review of the published data, lateral hindfoot impingement after nonunion of fracture of the lateral process of the talus was not found. We present the case of a patient with such an injury. The patient was treated operatively and was followed for 18 months.