Fig. 2From: Lantern-shaped screw loaded with autologous bone for treating osteonecrosis of the femoral headIntraoperative radiography for evaluation of surgical procedure. a Insertion of the lantern-shaped screw. b The lantern-shaped screw was being unfolded. c The lantern-shaped screw was the achievement of surface at surface support for the subchondral bone of femoral headBack to article page