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