Four cases of osteochondritis dissecans of the humeral capitellum which were treated surgically are reviewed. All cases were males and involved the dominant side. The age at surgery ranged from 14 to 16 years. Follow-up period ranged from 8 months to 3 years, 1 month. All cases belonged to children's baseball teams. Two of them continue to play even now. In addition to curettage or drilling etc, shortening of the radius was performed in all cases. All had good results. There was no instability after surgery. It seemed that shortening of the radius decreased the pressure in the radio-humeral joint.
