Autologous bone removal, as the name implies, is to move the bone, i.e., by applying certain techniques to “break” (osteotomy) the bone at the proximal or distal end of the defect site, fixing it with a special external fixation frame and delaying it for a period of time, gradually “moving” the free bone segment to the bone defect After a period of delay, the free bone segment is gradually “moved” to the bone defect until the bone defect is repaired and new bone is formed over the “walk” of the bone. Since osteosarcoma surgery to remove the tumor results in bone loss, the use of autologous bone relocation technology can be a good solution to this problem. In particular, compared to tumor-based prosthesis replacement and allogeneic bone grafting, the newly formed bone is one’s own, so there are no complications, and the joint function gets better over time. However, not all patients with osteosarcoma can undergo autologous bone removal, and its indications are very limited to the following patients: First, adolescent patients. First, adolescent patients. For the same period of osteosarcoma, if they are adolescents, their removal time is short and the success rate of surgery is higher; second, patients with good chemotherapy effect. Because it usually takes one and a half to two years to perform autologous bone relocation, if chemotherapy is poor, not only is the process of performing autologous bone relocation very painful, but also tumor metastasis resulting in death is likely to occur after the end of treatment. For such patients, autologous bone removal is not recommended; thirdly, it is suitable for tumors on the limb trunk, and for tumors on the joint, the function of the patient’s joint cannot be restored after autologous bone removal treatment.