Spinal NervesSpinal Nerve RootsSpinal CordForamen MagnumForamen Ovale, PatentNeuralgiaSpinal Cord InjuriesInjections, SpinalPeripheral Nerve InjuriesSciatic NerveLigationPeripheral NervesForamen OvaleHyperalgesiaLumbosacral RegionNerve FibersGanglia, SpinalPeripheral Nervous System DiseasesRats, Sprague-DawleyRadiculopathyNerve Compression SyndromesPainOptic NerveSpinal Cord NeoplasmsPain ThresholdHeart Septal Defects, AtrialNerve RegenerationMononeuropathiesPain MeasurementLumbar VertebraeSpinal CanalPeripheral Nervous System NeoplasmsPosterior Horn CellsNeuritisAxotomySpinal Cord DiseasesHyperesthesiaPhysical StimulationNeurons, AfferentEmbolism, ParadoxicalAnalgesicsLumbosacral PlexusNerve BlockCyclohexanecarboxylic AcidsAnesthesia, SpinalSpinal Cord CompressionMotor NeuronsMandibular NerveRhizotomySciaticaFacial NerveCervical VertebraePeripheral Nervous System AgentsSpinal NeoplasmsIntercostal NervesAxonsSpinal StenosisNerve Fibers, MyelinatedDisease Models, AnimalNerve EndingsSural NerveOccipital BoneTibial NerveMedian NerveSpinal DiseasesNerve CrushBehavior, AnimalSpineUlnar NerveSpinal FusionThoracic VertebraeFemoral NerveSciatic NeuropathyElectric StimulationCranial NervesMyelographyTooth ApexNeural ConductionTrigeminal NerveNerve Fibers, UnmyelinatedMaxillary NerveSensory Receptor CellsAminesInfusions, SpinalNociceptorsNerve Growth FactorsCadaverPhrenic NerveMagnetic Resonance ImagingSyringomyeliaNerve Growth FactorCauda EquinaNeurilemmomaEchocardiography, TransesophagealAccessory NerveWallerian DegenerationHindlimbSpinal InjuriesDissectionMuscular Atrophy, Spinal