Fracture of the medial tubercle of the posterior process of the talus: magnetic resonance imaging appearance with clinical follow-up.

Fractures of the medial tubercle of the posterior process of the talus are rare injuries. They are often misdiagnosed, resulting in increased morbidity and symptoms of chronic ankle pain and instability. When undetected, these fractures may become displaced, with potential additional injuries such as to the flexor hallucis longus tendon which may become interposed between the fracture fragments. We report a case of a clinically unsuspected fracture of the medial tubercle of the posterior process of the talus seen on magnetic resonance imaging, treated conservatively, with interval satisfactory healing of the fracture at 6 weeks follow-up.