We presented the follow-up study of fifteen hips of thirteen patients of CDH treated surgically. The follow-up period was 3.8 years in average. Open reduction was performed in two hips, open reduction with derotation varus osteotomy in five and open reduction with femoral shortening in eight. Saltor or Chiari operation was added in four. The postoperative results were excellent on the whole showing less deformity of the femoral head and a good stabilization of the hip. We stress that each factor obstructing a stable reduction should be evaluated and removed at surgery and, if overriding dislocation of the femoral head, decompression of femoral shortening is important to prevent necrosis of the femoral head.
