Dr. Aufranc: In an earlier presentation in this series, we discussed an acute slipped capital femoral epiphysis in a 10-year-old girl.<sup>1</sup>This child had had a sudden complete epiphyseal separation. Today's case deals with a much more common type of slipped capital femoral epiphysis, one of gradual onset. Dr. Joseph L. Shaw: A 13-year-old girl complained of limp and gradually progressive pain in the left hip over a three-week period. The case was evaluated in a hospital in another state where x-ray films showed a moderate slip of the left capital femoral epiphysis (Fig 1 and 2). Physical examination showed a painful, sensitive left hip with limitation of flextion to 90° and of internal rotation to 20°. There was 10° of abduction, but pain and involuntary muscle spasm limited other motion. Dr. Aufranc: Dr. Turner will discuss the management of this hip problem which is unique to the adolescent