The piriformis is a muscle in the gluteal region that originates from the anterior (front) part of the sacrum, the part of the spine in the gluteal region, and from the superior margin of the greater sciatic notch (as well as the sacroiliac joint capsule and the sacrotuberous ligament). It exits the pelvis through the greater sciatic foramen to insert on the greater trochanter of the femur. Its tendon often joins with the tendons of the superior gemellus, inferior gemellus, and obturator internus muscles prior to insertion[WP,modified]. [ http://en.wikipedia.org/wiki/Piriformis_muscle ]
Term information
The piriformis is a muscle in the gluteal region that originates from the anterior (front) part of the sacrum, the part of the spine in the gluteal region, and from the superior margin of the greater sciatic notch (as well as the sacroiliac joint capsule and the sacrotuberous ligament). It exits the pelvis through the greater sciatic foramen to insert on the greater trochanter of the femur. Its tendon often joins with the tendons of the superior gemellus, inferior gemellus, and obturator internus muscles prior to insertion[WP,modified].
Term relations
- gluteal muscle
- axial muscle
- has_muscle_origin some fused sacrum
- has_muscle_insertion some greater trochanter