A new V-Y advancement flap using the gluteus maximus fasciocutaneous flap is described. The skin, subcutaneous fat and gluteus maximus fascia are cut, but not the muscle belly. Thirteen patients with sacral pressure sores and radionecrosis underwent surgery using this method. Eleven of 13 patients experienced complete wound healing. In comparison with the conventional V-Y gluteus maximus musclocutaneous flap, this technique is easier and can achieve a better functional prognosis.