Avulsion fracture of the medial tubercle of the posterior process of the talus

Fractures of the medial tubercle of the posterior talar process are rare avulsion fractures, which commonly remain undetected during the first presentation of the patient in the Emergency Department, simulating a more benign ankle sprain. The diagnostic evaluation using three-dimensional (3D) computed tomography (CT) and the successful conservative treatment of a medial tubercle fracture in a young athlete is presented.