Piriformis is a muscle of the gluteal region which lies deep to the gluteus maximus. Piriformis belongs to a group of six short external rotators of the hip , i.e. gemellus superior, obturator internus, gemellus inferior, quadratus femoris, obturator externus. Attaching to the sacrum on one end and the greater trochanter on the other one, this muscle is reponsible for stabilising the hip joint and moving the thigh in various directions. Origin: Anterior surface of the sacrum (between the S2 and

Glute Anatomy 1

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