Osteochondral Defect (Osteochondritis Dissecans)

Definition: Damage to an area of cartilage, typically found in a joint. The most common location of an osteochondral defect in the foot and ankle is in the talus bone.

Symptoms: Knee pain and swelling

Possible Cause: A piece of the cartilage in the knee joint that separates from the joint surface. An osteochondral defect is most often caused by trauma, but some theories suggest that it may run in families or be caused by a metabolic problem.

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