Fig. 3.

Distance of change in elevation of the proximal femur in each step in the cadaver study is shown. Superior capsule release was most effective for elevation of the proximal femur. No major effects of further release of the internal obturator tendon were observed. Post to Sup = the posterior capsule was released after the superior capsule release; Sup to Post = the superior capsule was released after the posterior capsule release. Ant = anterior capsule release; Sup = superior capsule release; Post = posterior capsule release; Int Obt = internal obturator muscle release. Parenthetic numerals indicate the angle of hip hyperextension.