Fig. 2

A 22-year-old osteosarcoma male patient, underwent a revision surgery because of the prostheses loosening. A–C Preoperative X-ray, CT-scan, and MRI image showed a lesion at the distal femur. D Postoperative 1-year X-ray showed the prosthetic components at position. E, F Postoperative 3-year X-ray showed a prostheses loosening at the femur site. H, I, Prosthetic components at the femur site were removed. J, K The residual cement was removed and followed with allograft implanted. L A biological prosthetic component was implanted. M Postoperative full length film of double lower extremities showed the prostheses at position