In a series of eighteen patients with Legg-Perthes disease (nineteen hips) the mean age was eight years and six months; all patients were over five and a half years old. The patients were treated in the Newington ambulatory brace. With this treatment the problems of management in ambulatory casts were eliminated and the disadvantages of recumbent abduction treatment were overcome. The results obtained by the ambulatory weight-bearing treatment in the Newington brace were gratifying. When compared with other published non-operative methods, significantly fewer severe deformities of the femoral head resulted.