Spinal CordSpinal Cord InjuriesMusclesSpinal Cord DiseasesSpinal Cord CompressionSpinal Cord NeoplasmsMuscle, SkeletalMuscle ProteinsMuscle, SmoothSpinal Cord IschemiaMuscle Fibers, SkeletalMuscle, Smooth, VascularInjections, SpinalMotor NeuronsMuscle ContractionParaplegiaMuscle DevelopmentSpinal Nerve RootsSpinal NervesSpinal Cord RegenerationRats, Sprague-DawleySpinal CanalMuscle FatigueCervical VertebraeQuadriplegiaSpinal NeoplasmsMuscle DenervationAnesthesia, SpinalMuscle Fibers, Fast-TwitchThoracic VertebraeElectromyographySpinal DiseasesMuscle Fibers, Slow-TwitchLumbosacral RegionUmbilical CordLocomotionPosterior Horn CellsLaminectomyNerve RegenerationElectric StimulationAxonsHindlimbMyocytes, Smooth MuscleMitochondria, MuscleNeck MusclesRecovery of FunctionTime FactorsGanglia, SpinalSpinal StenosisParalysisMuscle WeaknessSpinal Cord StimulationMuscle SpindlesSpinal FusionSpinal InjuriesRespiratory MusclesOculomotor MusclesAnterior Horn CellsDisease Models, AnimalMuscle, StriatedMyelitisCordotomyMuscle RelaxationElectric Stimulation TherapyPainNeuronsMuscular Atrophy, SpinalAbdominal MusclesPapillary MusclesCatsReflexHyperalgesiaQuadriceps MuscleNeurons, AfferentIntercostal MusclesImmunohistochemistryMuscular AtrophyNeuralgiaAfferent PathwaysCells, CulturedMuscle CellsMuscle SpasticityMotor ActivityRats, WistarMyelographySpineMasseter MuscleFacial MusclesMagnetic Resonance ImagingUrinary Bladder, NeurogenicEpidural SpaceMasticatory MusclesLumbar VertebraeIsometric ContractionNociceptorsPyramidal TractsHematoma, Epidural, SpinalPhysical StimulationPain MeasurementBiomechanical Phenomena