Lumbosacral RegionSacrumSpinal CordSpinal Cord InjuriesLumbosacral PlexusSpinal Cord DiseasesSpinal Nerve RootsSpinal Cord CompressionSpinal Cord NeoplasmsLumbar VertebraeNerve FibersSpinal Cord IschemiaInjections, SpinalMotor NeuronsCauda EquinaSpinal NervesSpinal CanalSpinal DiseasesSpinal NeoplasmsParaplegiaRadiculopathySpinal Fusion