Figure 1. (a) Anatomic borders of deep gluteal space and (b) course of the sciatic nerve in distal gluteal region. GT: Greater trochanter; PM: Piriformis muscle; OI: Obturator internus; GS: Gamellus superior; GI: Gamellus inferior; SN: Sciatic nerve; STL: Sacrotuberous ligament; QF: Quadratus femoris; HT: Hamstring tendon; IGN: Inferior Gluteal Nerve; F: Femur; IT: Ischial tuberosity; GM: Gluteus maximus muscle.
