Lumbosacral RegionSacrumSpinal CordSpinal Cord InjuriesLumbosacral PlexusLumbar VertebraeThoracic VertebraeCervical VertebraeSpinal Cord DiseasesSpineSpinal Nerve RootsSpinal Cord CompressionSpinal Cord NeoplasmsSpinal DiseasesSpinal NeoplasmsSpinal CanalSpinal FusionSpinal Cord IschemiaInjections, SpinalMotor NeuronsCauda EquinaSpinal NervesRadiculopathyLaminectomyParaplegiaSpinal FracturesSpinal Stenosis