Anterior flap hemipelvectomy. A, Anterior and posterior incision. B, Detachment of gluteus maximus origins from coccyx and sacrotuberous ligament. C, Severing vastus lateralis from femur and separating tensor fascia femoris from fascia. D, Separation of myocutaneous flap. E, Transection of internal iliac vessels and branches. SEE TECHNIQUE 17.4.