从１９８９年初开始应用改良髋骨切骨术（髋骨外板略高于内板的斜线切骨）治疗先天性髋关节脱位６８例，疗效满意，本术能良好地顺应髋臼的向外，向前，向下旋转，有效地降低髋臼指数和纠正髋臼的异常指向。同时，由于斜切面积增大，使三角骨块易于植入且植入后很稳定，增加了髋关节复位后的稳定性。 From the beginning of 1989, 68 cases of congenital dislocation of the hip were treated with modified hip osteotomy (hip bone plate is slightly higher than the slant of the internal plate), the curative effect was satisfactory. This technique can well conform to the outward of the acetabulum , Rotate forward and downward, effectively reducing the acetabular index and correcting the abnormal orientation of the acetabulum. At the same time, as the chamfer area increases, the triangular bone is easy to implant and stable after implantation, increasing the stability of the hip joint after reduction.