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