Bone metastasis surgery, Arthroplasty, Knee replacement, Hip replacement, Knee replacement revision, Peripheral nerve t...umor surgery, Soft tissue sarcoma surgery, Bone reconstruction, Hip replacement revision, Pelvic tumor surgery, Bone metastasis, Soft tissue sarcoma, Pelvic sarcoma, Pelvic bone tumor, Hip arthritis, Bone tumor, Failed total hip replacement, Bone cancer, Knee arthritis, Sarcoma, Soft tissue tumor, Failed total knee replacement, Periprosthetic joint infection