Boyd disarticulation of hip. A, Femoral vessels and nerve have been ligated, and sartorius, rectus femoris, pectineus, and iliopsoas muscles have been detached. Inset, Line of skin incision. B, Gluteal muscles have been separated from insertions, sciatic nerve and short external rotators have been divided, and hamstring muscles have been detached from ischial tuberosity. Inset, Final closure of stump. (Redrawn from Boyd HB: Anatomic disarticulation of the hip, Surg Gynecol Obstet 84:346, 1947.) SEE TECHNIQUE 17.1.