Fig. 1

Typical procedure for osteosarcoma at distal femur. a, b Image data shows an osteosarcoma of distal femur. c Dissect the tumor-bearing bone from surrounding normal tissues with safe margin. d Put a heat-isolation pad between the tumor bone and surrounding normal tissues and began to deliver electromagnetic energy into tumor bone. e The microwave generator and antenna. f Remove or curettage the dead soften tumor mass and give fibular bone autograft. The mixture materials of bone chips and bone cement was used filling the cavity. g Restore the normal shape of the femur and give a prophylactic fixation. h X-ray film after surgery