Fig. 1.

An experimental model of ischemic necrosis of the capital femoral epiphysis using a cervical ligation. After a longitudinal skin incision over the left hip joint under sterile condition, a partial capsulotomy was performed and the ligamentum teres was transected. Two ethibond sutures were placed around the neck and hand-tied using slip-proof ligation technique as tightly as possible to disrupt the ascending cervical vessels supplying the capital femoral epiphysis (A). To evaluate the position of cervical ligation, stainless steel wire was used in pilot study and the postoperative radiograph showed proper position of cervical ligation wires (B).