Spinal fusion, Spine decompression, Spine reconstruction, Nerve decompression, Brain tumor, Spinal cord tumor, Brain me...tastasis, Neurofibromatosis, Meningioma, Degenerative disk disease, Cerebrovascular disease, Glioblastoma, Pituitary tumor, Acoustic neuroma, Glioma, Ependymoma, CSF leak, Astrocytoma, Chordoma, Oligodendroglioma, Neurofibroma, Spinal tumor, Choroid plexus papilloma