fig2

Figure 2. The location of the gluteus medius muscle (GMeM) (**) and piriformis muscle (*). The GMeM (**) is located in the buttock over the gluteus minimus and partially under the gluteus maximus muscle; it is covered by a tight gluteal aponeurosis. The piriformis muscle (*) connects the sacrum and greater trochanter. Loading of this muscle results in buttock pain and affects the adjacent sciatic nerve (arrow)