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