Can you give chemotherapy only for bone cancer in phase 0?

Clarify question?: What do you mean by phase 0? What kind of bone cancer you are referring here? Are you referring a primary bone cancer like osteosarcoma or metastatic disease to the bone? We'd be able to help you better if you can make your question more clear.

Usually not: The treatment of bone sarcomas depends on the specific diagnosis like ewing sarcoma, osteosarcoma, chondrosarcoma etc. Conventional osteosarcoma is generally standard treated with chemotherapy and surgical resection of the tumor. Ewing sarcoma is also treated with chemotherapy, surgery and/or radiation to the tumor. Chemotherapy is usually not sufficient unless diagnosis is lymphoma or myeloma.