Endoscopic release of gluteal muscle contracture using two portals technique. (A) In neutral lateral position of the hip, important anatomical landmarks were drawn. IP represents inferior portal or viewing portal (3 cm distal to superior border of greater trochanter) whereas SP represents superior portal (5 cm proximal to IP) which is working portal; and an arrow points the course of sciatic nerve; (B) surgeon created an artificial working space; (C) represents endoscopic release of gluteal muscle contracture in lateral position and; (D) shows silvery white contracture bands.