Spinal PunctureAnesthesia, SpinalSpinal CordSpinal Cord InjuriesPuncturesSpinal Cord DiseasesSpinal Cord CompressionSpinal Cord NeoplasmsInjections, SpinalSpinal Cord IschemiaSpinal NervesSpinal Nerve RootsPost-Dural Puncture HeadacheSpinal CanalParaplegiaSpinal NeoplasmsSpinal DiseasesMotor NeuronsSpinal StenosisSpinal Cord RegenerationSpinal FusionCervical VertebraeThoracic VertebraeSpinal InjuriesLaminectomyQuadriplegiaGanglia, SpinalLumbosacral RegionPosterior Horn CellsRats, Sprague-DawleyMuscular Atrophy, SpinalRecovery of FunctionAxonsLocomotionNerve RegenerationMyelographySpinal Cord StimulationAnterior Horn CellsPainSpineHematoma, Epidural, SpinalNeedlesEpidural SpaceUmbilical CordMyelitisDisease Models, AnimalCordotomyLumbar VertebraeHyperalgesiaParalysisDura MaterTuberculosis, Spinal