Osteochondral Lesion of the Talus

An osteochondral lesion of the talus is an injury to the lowest bone in the ankle joint (the talus) and to the cartilage that covers it. This condition is sometimes called an osteochonral fracture or osteochondritis dessicans, however it should not be confused with osteochondritis dessicans of the knee.

This condition may be caused by either a traumatic injury, such as a sprained ankle, or over time to repetitive movement or overuse.

Illustration of the foot and ankle bones, labeled.
Illustration of the bones of the foot and ankle shown from the top and side view, with the talus highlighted.

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