Wide resection of primary tumors of bone and replacement with massive bone grafts: an improved technique for transplanting allogeneic bone grafts.

The treatment by wide resection of 104 local aggressive and low grade malignant bone tumors is presented with results after follow-up for 5.0 years on the average. The series comprises 29 giant cell tumors, most of them malignant or premalignant, 25 cartilaginous tumors (12 verified chondrosarcomas and 13 chondromas suspect of malignancy), 14 cases of sarcoma, 6 of fibrosarcoma, 4 parosseal sarcomas, 3 osteosarcomas and one chordoma. The remaining 36 cases include: aneurysmal bone cysts, fibrous dysplasia, chondroblastomas, osteoblastomas, giant chondromyxoid fibroma, and hemangiomas. After resection of the affected area, the resulting defect was replaced with massive autologous or allogeneic bone or osteoarticular graft in altogether 68 cases (autologous bone transplant in 61 cases and allograft in 7). A metallic endoprosthesis was used in replacement in 8 cases. No replacement of the defect was needed in 28 cases. The technique of the allogeneic bone transplantations consisted of massive bone or bone cartilage grafts which had been stored at a low temperature, and firm osteosynthesis. In every case, allogeneic (stored) bone was supplemented with autologous cancellous bone around the juncture of graft and host bone. This supplement proved to be important for success of the operation. The overall results were good in 81% and fair in 11%. Five cases had to be amputated and 3 patients were lost to follow-up, a possible total of 8% poor results. Extensive resection with massive bone grafting is a worthwhile approach in the treatment of selected cases of aggressive and low grade malignant bone tumors.