Fig. 1.
Surgical procedure to induce osteonecrosis of the femoral head. a Division of the short abductor muscle. b The joint capsule is opened, the ligamentum teres cut, and a suture placed around the base of the femoral head c Sutures tied. d EZ-IO cannula is used to deliver bisphosphonates and SAIB containing rhBMP-2 into the femoral head