Superior Gluteal Nerve:

From: www.wheelessonline.com

- Anatomy:
       - from the lumbo-sacral plexus, arises from posterior branches L4, L5, S1;
       - exits the pelvis and enters the gluteal regioin through the upper margin
              of the greater sciatic notch, just superior to the piriformis muscle.
       - it courses with superior gluteal artery  between gluteus medius and minimus,
              and supplies motor branches to both as well as the tensor fascia lata.