Spinal NervesSpinal Nerve RootsSpinal CordNeuralgiaSpinal Cord InjuriesInjections, SpinalSciatic NervePeripheral Nerve InjuriesLigationPeripheral NervesHyperalgesiaGanglia, SpinalNerve FibersLumbosacral RegionPeripheral Nervous System DiseasesRats, Sprague-DawleyRadiculopathyPainOptic NerveNerve Compression SyndromesPain ThresholdSpinal Cord NeoplasmsNerve RegenerationPain MeasurementMononeuropathiesTooth RootPosterior Horn CellsNeurons, AfferentAxotomyNeuritisPeripheral Nervous System NeoplasmsPhysical StimulationLumbar VertebraeHyperesthesiaAnalgesicsRhizotomySpinal Cord DiseasesMotor NeuronsSciaticaCyclohexanecarboxylic AcidsAnesthesia, SpinalNerve BlockAxonsPeripheral Nervous System AgentsIntercostal NervesLumbosacral PlexusSpinal CanalNerve Fibers, MyelinatedSural NerveTibial NerveNerve EndingsDisease Models, AnimalNerve CrushSpinal Cord CompressionSpinal DiseasesMedian NerveBehavior, AnimalFacial NerveSpinal NeoplasmsUlnar NerveSpinal StenosisSciatic NeuropathyElectric StimulationSensory Receptor CellsFemoral NerveNeural ConductionSpinal FusionSpineNociceptorsNerve Fibers, UnmyelinatedThoracic VertebraeNerve Growth FactorsAminesCervical VertebraeInfusions, SpinalCauda EquinaPhrenic NerveTrigeminal NerveNerve Growth FactorMyelographyPlant Root CapWallerian DegenerationHindlimbRoot ResorptionCranial NervesSpinal InjuriesAfferent PathwaysDenervationMuscular Atrophy, SpinalBrachial PlexusRadial NerveNerve DegenerationPeripheral Nervous SystemNerve TissueAction PotentialsImmunohistochemistryLoperamideSpinal Cord Ischemiagamma-Aminobutyric AcidOphthalmic Nerve