Posterior talocalcaneal coalition

Tarsal coalition is a rare congenital deformity. The most common coalitions involve the calcaneonavicular joint and the medial facet of the talocalcaneal joint. The posterior facet is rarely involved. We report a case of a patient with a posterior talocalcaneal bar who presented with painful limitation of subtalar motion without the classical appearance of spastic flat foot. Resection of the bar with interposition of fat graft resulted in an almost full range of pain-free subtalar motion.