Spinal CordSpinal Cord InjuriesCervical VertebraeSpinal CanalSpinal Cord CompressionSpinal Cord DiseasesSpinal Cord NeoplasmsQuadriplegiaPhrenic NerveSciatic NerveSpinal Nerve RootsPeripheral NervesSpinal InjuriesSpinal NervesNerve RegenerationSpinal StenosisMotor NeuronsLaminectomyNerve FibersMyelitisForelimbMyelographySpondylosisOptic NerveAnterior Horn CellsInjections, SpinalRecovery of FunctionSpinal DiseasesParalysisMagnetic Resonance ImagingNeckSpinal NeoplasmsNerve TissueRats, Sprague-DawleySpinal FusionAxonsAnesthesia, SpinalRespiratory ParalysisContusionsPeripheral Nerve InjuriesNerve BlockUmbilical CordNeck InjuriesLongitudinal LigamentsTibial NervePyramidal TractsElectric StimulationSural NerveNerve EndingsNerve CrushMedian NerveSpinal Cord StimulationSpinal Cord IschemiaFacial NerveNerve Fibers, MyelinatedElectromyographyThoracic VertebraeUlnar NerveAfferent PathwaysRed NucleusKlippel-Feil SyndromeDecompression, SurgicalPosterior Horn CellsNeural ConductionFemoral NerveEpidural AbscessDura MaterDiaphragmBrain StemNerve Growth FactorsTrigeminal Caudal NucleusMedulla OblongataArnold-Chiari MalformationElectric Stimulation TherapyEcho-Planar ImagingCatsGanglia, SpinalDisease Models, AnimalNeurons, AfferentHypoglossal NerveTrigeminal Nucleus, SpinalSyringomyeliaParaplegiaEpidural SpaceTrigeminal NerveNerve Growth FactorSpinal OsteophytosisArmReflexLocomotionNerve Compression SyndromesNeuronal Tract-TracersCranial NervesNeurologic ExaminationMuscular Atrophy, SpinalEfferent PathwaysRadial NerveRadiculopathyAutonomic DysreflexiaNeuroma