Joint replacement surgery, Amputation, Limb salvage surgery, Rotationplasty, Bone cancer, Rhabdomyosarcoma, Epithelioid... sarcoma, Ewing sarcoma, Osteosarcoma, Angiosarcoma, Synovial sarcoma, Bone metastasis, Malignant peripheral nerve sheath tumors, Leiomyosarcoma, Chondrosarcoma, Myxofibrosarcoma, Solitary fibrous tumor, Undifferentiated pleomorphic sarcoma, Sarcoma, Liposarcoma, Soft tissue sarcoma, Soft tissue tumor, Merkel cell carcinoma, Bone tumor, Dermatofibrosarcoma protuberans