Avulsion fracture of the medial malleolus following posterior tibialis tendon dislocation: a case report.

Dislocation of the posterior tibialis tendon as an isolated injury is rare. The diagnosis is often delayed due to its rarity and the need for various second line imaging modalities. We present a case of a dislocated posterior tibialis tendon that resulted in an avulsion type fracture of the medial malleolus. The fracture was openly reduced and internally fixed with inter-fragmentary screws. The patient was asymptomatic at 1 year follow-up.