Spinal Cord InjuriesSpinal CordQuadriplegiaChronic DiseaseParaplegiaSpasmMuscle SpasticityWheelchairsElectromyographyUrinary Bladder, NeurogenicMotor NeuronsUrinary BladderSpinal Cord DiseasesCordotomyReflexThoracic VertebraeUrinationElectric Stimulation TherapyRecovery of FunctionInjections, SpinalSpinal Cord CompressionSpinal Cord NeoplasmsRats, Sprague-DawleyAnterior Horn CellsElectric StimulationSpinal Nerve RootsExercise TherapySpinal Cord IschemiaReflex, AbnormalDecerebrate StateSpinal DiseasesCervical VertebraeLocomotionWalkingDisease Models, AnimalLumbosacral RegionZygapophyseal JointMuscle, SkeletalSacrumSpineMuscle ContractionSpinal NervesCatsTime FactorsSpinal Cord RegenerationCross-Sectional StudiesBack PainTailHindlimbSpinal CanalSpinal NeoplasmsAnesthesia, SpinalPainInjections, EpiduralPain ManagementUmbilical CordPosterior Horn CellsLaminectomyLumbar VertebraeMotor ActivityMononeuropathiesNerve RegenerationAxonsSpinal StenosisPain MeasurementGanglia, SpinalSpinal Cord StimulationSpinal FusionSpinal InjuriesMyelitisNerve Block5-HydroxytryptophanParalysisMuscular Atrophy, SpinalNeuronal PlasticityNeuronsHyperalgesiaNeuralgiaChronic PainMyelographyAnkleElectrophysiologyWeight-BearingAction PotentialsTreatment OutcomeAnesthetics, LocalEpidural SpaceAfferent PathwaysAnalysis of VariancePostureHematoma, Epidural, SpinalNeurons, AfferentNociceptorsLampreysAutonomic DysreflexiaInterneuronsPyramidal TractsMagnetic Resonance ImagingTuberculosis, SpinalMyelin Sheath