[Functional treatment of malignant bone tumors]

In treating malignant bone tumors of the limbs, what might be accepted as a reasonable therapy is preserving the functions of the affected limb, with controlling tumor both locally and systemically. Concerning giant cell tumor of bone (low malignancy), malignant fibrous histiocytoma of bone and primary or secondary chondrosarcoma (moderate malignancy) and osteosarcoma (high malignancy), surgical treatments to preserve the affected limb and to maintain it's function are going to be introduced with their actual applications mainly through clinical cases. In the treatment for osteosarcoma of the child, even after succeed in preserving the affected limb, there are some problems of the development of the limb, disorders of the local skin and soft tissue, and troubles concerning artificial materials.