In the five cases of ischiopubic osteochondritis described, the average age of the patients was seven and one-half years. No further light is shed on the etiology, but the belief is expressed that of the two factors, trauma and infection, the former is the more important. The symptoms were principally limitation of motion of the hip and tenderness along the pubic ramus. The roentgenograms showed rarefaction, roughening, and irregularity at the ischiopubic junction. The treatment consisted of recumbency and traction to the affected hip. Recovery was complete, clinically and roentgenographically, in every patient except one, who died of intercurrent pneumonia.