Osteosarcoma is generally insensitive to radiotherapy, hence radiation therapy is not used for such diseases in clinical settings. Similarly, these diseases have a moderate sensitivity to chemotherapy, necessitating the use of relatively high doses of chemotherapy during treatment. The main mechanism of chemotherapy involves using a series of cytotoxic drugs to inhibit tumor growth. Although high-dose chemotherapy can effectively kill tumor cells, it can also damage some of the patient's normal cells, leading to severe reactions. If radical surgery is viable for these patients, then curative surgery is the preferred method of treatment.