Cancer treatment, Spinal fusion, Spine procedure, Amputation, Limb salvage surgery, Prophylactic surgery, Spondylolisth...esis surgery, Surgical biopsy, Tumor biopsy, Surgical stabilization of metastatic bone cancer, Tumor resection, Vertebral column resection, Pelvic tumor surgery, Spine decompression, Hemipelvectomy, Spine reconstruction, Spine tumor surgery, Sacrectomy, Bone metastasis surgery, Fracture treatment, Bone biopsy, Spinal stabilization surgery, Cancer, Bone cancer, Soft tissue sarcoma, Spinal stenosis, Spinal cord injury, Bone metastasis, Spondylosis, Chondrosarcoma, Cancer of unknown origin, Sarcoma, Spinal tumor, Osteosarcoma, Spondylolisthesis, Chordoma, Tumors and masses, Pelvic sarcoma, Spinal abscess, Soft tissue tumor, Stage 4 melanoma, Spinal fracture, Spinal metastasis, Spondylolysis, Stage 4 colorectal cancer, Spondylotic myelopathy, Pathologic fracture, Pelvic bone tumor, Spondyloarthritis, Stage 4 breast cancer