Gluteus maximus is a bulky muscle with three sources of blood supplying also a skin flap that extends from iliac crest down to the popliteal fossa. The myocutaneous flap has been used long time ago, as an insensate flap, to cover defects in the buttocks.9,10,12 In this study we use this muscle as a sensate flap keeping sensory and motor nerves, to cover major defects in the buttocks and groin. This study included seven cases with different indications. The technique depends upon full mobilization of the muscle based on two main vascular pedicles to maintain adequate vascularity and nerve supply of the transposed flap. Aim Of The Study study demonstrate the importance of keeping sensation and motor function of the gluteus maximus muscle during moving it with the overlying skin to repair large defects around the upper part of the lower limb. Anatomy of Gluteus maximusThe muscle originates from the posterior aspect of dorsal iliac bone, posterior superior iliac crest and posterior inferior aspect of sacrum and coccyx and sacrotuberous ligamentIt is inserted in fascia lata at the iliotibial band and in the gluteal tuberosity on posterior femoral surface. It is innervated by lower gluteal nerve only, formed by L5, S1 and S2 roots and reaching the gluteal region below the pyriform muscle.The muscle is supplied by triple sources of blood, the superior gluteal artery, inferior gluteal artery; and branches of femoral system coming from the cruciate anastomosis around the femur. 19 , 20 , 21 , 36 The muscle is the major extensor of hip joint.
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