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Ten cases of osteochondritis dissecans of the humeral capitellum which were treated surgically are reviewed. All 10 cases were males and involved the dominant side. The ages at surgery ranged from 13 to 17 years. Follow-up ranged from 1 to 7 years. All of the youths had competed in organized athletics, either baseball or football. By position there were three pitchers, two catchers, two infielders, and one outfielder; in addition there were one quarterback and one linebacker. Only one patient presented with locking of the elbow, whereas the others presented with pain and limitation of extension. The locked elbow was explored immediately and the others were explored after immobilization failed to relieve their symptoms. In seven of the joints a loose fragment of the capitellum was found lying either in the joint or in a defect in the capitellum. The fragment had multiple small holes. In three cases there was no loose fragment. In this situation a corticol window was cut above the capitellum. The capitellum was then drilled and bone was grafted from above. Over all, there were one excellent, six good, one fair, and two poor results. There seemed to be little difference between curretting alone or curetting and drilling. The cases with the cartilage intact and bone grafted from above did worse, with one fair and one poor result of three cases. The two poor results required further surgery, which consisted of partial excision of the capitellum. All cases lacked elbow extension before and after surgery, but nine of 10 gained some motion after surgery. Pre- and postoperative x-rays are shown in this report and a brief review of the literature concerning osteochondritis dissecans is presented.