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