Fig. 5

Female, 69 years, periprosthetic joint infection. a Preoperative X-ray showed that the stem was well fixed and was removed by using ETO. b X-ray four months after spacer implanted showed nonunion of the ETO osteotomy fragment (green arrow). The wires were embedded in the femoral cortex. c The spacer was removed and the Corail Revision femoral stem was implanted. Some of the wires were replaced. Anteroposterior and lateral X-rays immediately after operation (c1 and c2). The stem and femur matched well. The stem realized immediate and reliable fixation. X-ray showed nonunion of the ETO osteotomy fragment (green arrow). d Anteroposterior and lateral X-rays one year after operation (d1 and d2) showed spot welds in Gruen3/5/6 (white arrow), callus in osteotomy line (green arrow) and osteopenia of greater trochanter (blue arrow). The osteotomy fragment was fractured and migrated (yellow arrow). e Anteroposterior and lateral X-rays three years after operation (e1 and e2) showed the stem stability, union of the ETO fragment (green arrow), spot welds in femur (white arrow), atrophy of femoral calcar (red arrow). Osteopenia of greater trochanter due to fracture and loosening (blue arrow)