Perthes disease conplicated by so called osteochondritis dissecans.
A patient was followed for about 11 years from the onset of Perthes Disease (age 12). The radiographs during the period demonstrated the actual development of a free ossicle which was formed by resorption of a portion of the original femoral head, resulting in a wafer and subsequent enlargement by new bone formation. Changes of a similar nature have been described in idiopathic necrosis of the femoral heads in adults.
D002648:Child; D005271:Femur Head Necrosis / Q000150:complications* / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D007873:Legg-Calve-Perthes Disease / Q000150:complications* / Q000000981:diagnostic imaging; D008137:Longitudinal Studies; D010007:Osteochondritis / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography