title: Osteochondritis dissecans.
abstract: Osteochondritis dissecans were recognized many years ago, but its cause remains debatable. In a case of osteochondritis dissecans in a 24-year-old black man, hemosiderin was found in the loose body that was removed from the patient's knee. The presence of hemosiderin supports injury as the cause, but the patient had no history to indicate injury was a factor.
mesh_terms: D000328:Adult; D006485:Hemosiderin / Q000032:analysis; D006801:Humans; D007594:Joint Loose Bodies / Q000473:pathology; D007719:Knee Joint / Q000473:pathology*; D008023:Ligaments, Articular / Q000032:analysis; D008297:Male; D010007:Osteochondritis / Q000473:pathology*; D010008:Osteochondritis Dissecans / Q000473:pathology*
chemical_list: D006485:Hemosiderin