Fig. 1From: Correlation between preoperative CT scan of the paraspinal, psoas, and gluteus muscles and postoperative ambulatory status in patients with femoral neck fracturesAxial CT scan slices and the measurement of muscle cross-sectional area. (1) Superior end of the L5 vertebra – paraspinous /psoas muscles; (2) inferior end of the sacroiliac joint – gluteus maximus muscle; and (3) superior end of the femoral head – gluteus medius muscleBack to article page