twenty patients with malignant or potentially malignant tumors ( osteogenic sarcoma , giant-cell tumor , synovial-cell sarcoma , chondrosarcoma , and chondroblastoma ) located in the proximal end of the tibia or distal end of the femur were treated by local resection and arthrodesis employing an intramedullary rod and autogenous segmental cortical grafts obtained from the same extremity .
C0017525
giant-cell tumor
C0007634
cell