Post-traumatic avascular necrosis of the talus
Aggravating pain on weight bearing. History of ankle dislocation 6 years before presentation.
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Extensive osteonecrosis of the talar dome and small osteonecrosis of the talar head. Subchondral tibial cysts and antero-medial impingement from osteophytes in post-traumatic osteoarthritis of the ankle joint.