Figure 1

A patient with postoperative recurrence of bone giant cell tumor and pathological fracture in left distal femur (Case 4). a Osteotomy was performed at 3 cm above the upper boder of tumor, b All tissue on the tumor bone was removed and the medullary cavity was drilled through, c The tumor bone was infused in dehydrated alcohol for 30 minutes, d The deactivated autograft was adjusted and combined with prothesis using bone cement with which the bone defect filled e The autograft-prothesis composite was fixed with host bone with the junction site tied around autogenous bone as extracortical bone grafting.