PiriformisAndPelvis jpg
Summary: is on the pelvic surface of the sacrum and the sacrotuberous ligament it extends through the greater sciatic foramen to its insertion point on the upper end of the greater trochanter When the muscle contracts it rotates the thigh outwards external rotation As with all muscles sitting close to a joint its main function is to provide stability for the thigh and hip
Image Dimensions: 396 x 486
Image originally found here.
