129 hips in 88 children (47 unilateral hips and 82 bilateral hips), treated in our clinic from October 1962 to Descember 1968, were reexamined. It consist of 43 dislocated hips, 55 sub-dislocated hips, and 31 dysplasic hips according initial classification. Duration of treatment with this brace was largely four to six months. The age distribution were 2y 6m to 8y (average 3 year old) at the time of this examination.
Majority of the hips showed exellent funcion. However acetabular angle was 25 degrees or more in 27.1% of the cases and C-E angle was 14 degrees or below in 38.0%. 46.5% showed 90 Y-coordinate-index or above which mean lateral displacement of the head of femur according Dr. Iino. There were 28 hips which showed tendency of lateral displacement at the time of initial examination. 18 hips (64.3%) of them still showed lateral displacement at the time of this investigation. The number of deformed femur head was 12 at the time of initial investigation and 4 at the recent examination.
