Spinal Nerve RootsSpinal NervesPeripheral Nervous System NeoplasmsSpinal FusionSpinal CordNerve Compression SyndromesLumbosacral RegionScoliosisLumbar VertebraeSpinal Cord Vascular DiseasesRadiculopathyOrthopedic Fixation DevicesThoracic VertebraeKyphosisSpineLaminectomyMagnetic Resonance ImagingSpinal DiseasesNeuralgiaBone ScrewsCervical VertebraeInternal FixatorsSpinal Cord InjuriesInjections, SpinalLongitudinal LigamentsSciatic NerveInfarctionSciaticaPeripheral Nerve InjuriesLigationPeripheral NervesLumbosacral PlexusGanglia, SpinalHyperalgesiaPeripheral Nervous System DiseasesIntervertebral Disc DisplacementNerve FibersCauda EquinaNerve BlockSpinal FracturesSpinal CanalSpinal Cord NeoplasmsRats, Sprague-DawleySpinal StenosisSacrumPainRetrospective StudiesPostoperative ComplicationsPain MeasurementMyelographyTreatment OutcomeSpinal Cord CompressionEpidural SpacePain ThresholdSpinal Cord DiseasesOptic NerveNerve RegenerationCervical PlexusSpinal NeoplasmsMononeuropathiesRhizotomyNeurons, AfferentLow Back PainPosterior Horn Cells