Fig. 5.

a. Postoperative anteroposterior x-ray of left hip and proximal femur at 25 days follow up demonstrates more cranial position of the lag screw without any lytic defect behind, while the H΄/H is now 0.65. The grey arrow shows the calcar to the opposite side. All these findings are indicative of the 180° rotation of femoral head-lag screw unit.

b. Anteroposterior x-ray of left hip and proximal femur on admission to our institution shows the cranial cut out of the lag screw. After the intraoperative findings, we can now conclude that the grey arrow shows the upside-down calcar, while the green arrow shows the lytic defect from the initial placement of the lag screw, close to the calcar.