Five cases of Osteochondritis Dissecans and one case of Osteochondritis of the capitulum humeri (Panners' disease) were presented.In one case of the Osteochondritis Dissecans bilateral knee joints were affected, others were the right elbow joints. They were all boys, aged eleven to fourteen at onset and thirteen to seventeen at visit to our clinic. Three of them had been operated, the results were excellent on the knee joints but good on the elbow joints. Another two conservative cases of the elbow joints had good results.The case of the Osteochondritis of the capitulum humeri has been treated conservatively, has no symptoms nor functional disabilities.