Spinal Nerve RootsSpinal NervesSpinal Cord InjuriesSpinal CordPeripheral Nervous System NeoplasmsNerve Compression SyndromesLumbosacral RegionRadiculopathyParaplegiaLumbar VertebraeQuadriplegiaNeuralgiaRecovery of FunctionMagnetic Resonance ImagingInjections, SpinalCervical VertebraeNerve RegenerationSciatic NerveSciaticaPeripheral Nerve InjuriesLigationPeripheral NervesLumbosacral PlexusRats, Sprague-DawleyGanglia, SpinalHyperalgesiaPeripheral Nervous System DiseasesParalysisNerve FibersCauda EquinaIntervertebral Disc DisplacementHematoma, Epidural, SpinalThoracic VertebraeContusionsAccidents, TrafficNerve BlockAxonsSpinal CanalDisease Models, AnimalSpinal Cord NeoplasmsMuscle SpasticityInjury Severity ScoreSpinal StenosisPainThrombophlebitisSacrumTime FactorsPain MeasurementMyelographyPain ThresholdAccidental FallsEpidural SpaceOptic NerveSpinal DiseasesDisability EvaluationSpinal Cord DiseasesSpinal Cord CompressionLaminectomyCervical PlexusMicrogliaMononeuropathiesRhizotomy