Fig. 9From: A modified surgical method for the treatment of ONFH: quadratus femoris muscle pedicle bone grafting with preservation of the posterior superior retinacular arteryThe position of the origin of the posterior superior retinacular artery. It can be seen that the branches of the IGA enter the hip joint capsule. Black ball: gluteus minimus, pink ball: gluteus medius, white ball: sciatic nerve, yellow ball: piriformis muscle, blue ball: superior quadratus muscle, orange ball: obturator muscle, green ball: inferior quadratus muscle, red ball: quadratus femorisBack to article page