Fig. 2From: A modified surgical method for the treatment of ONFH: quadratus femoris muscle pedicle bone grafting with preservation of the posterior superior retinacular arteryPulling of the gluteus maximus muscle to separate and expose the external circumflex muscle group. a Gluteus maximus; b Greater trochanter; c Tensor fasciae latae; d Piriformis; e Superior gemellus; f Obturator internus; g Inferior gemellus; h Quadratus femorisBack to article page