Medical Definition of Osteochondritis dissecans
Osteochondritis dissecans: A condition in which a fragment of bone in a joint is deprived of blood and separates from the rest of the bone, causing soreness and making the joint give way. Diagnosis is made via X-ray. Treatment usually involves casting, although if the fragment has detached completely, arthroscopic surgery may be necessary. Abbreviated OCD and OD.
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