Osteosarcoma has very limited pain relief effects through simple or pure hot compresses. As the lesion progresses, hot compresses can become completely ineffective or have very unclear effects. Clinical manifestations include pain and swelling, with local formation of lumps or tumor-like appearances. It can also affect the joint mobility around it, and even cause atrophy of limbs and muscles. In terms of treatment, it still relies on early surgical excision, but the prognosis is still not very optimistic.