History of noncontact injury of left ankle TENDONS: The peroneal, extensor, flexor, and Achilles tendon are intact.LIGAMENTS: The medial and lateral ligament complexes are intact.ARTICULAR SURFACES AND BONE: No fractures are identified. There is a small' cylindrical focus of bone marrow signal abnormality within the distal tibia within an additional similar focus of signal abnormality within the posterior calcaneus compatible with osseous defect from prior external fixation device. Small subchondral cysts are present within the posterior aspect of the distal tibia with associated reactive bone marrow edema. There is ossification of the distal tibiofibular syndesmosis which may reflect old injury. There is mild cartilaginous thinning along the posterior aspect of the tibiotalar joint. Visualized cartilage is otherwise grossly intact.ADDITIONAL
1.Mild-moderate osteoarthritis of the tibiotalar joint.2.Sequela of prior ankle injury as described above.