Central Cord SyndromeArachnoiditisSpinal Cord InjuriesAnterior Spinal Artery SyndromeSpinal Cord DiseasesSpinal CordGait Disorders, NeurologicWalkingRoboticsLocomotionElectromyographySyndromeGaitCervical VertebraeDependent AmbulationQuadriplegiaRecovery of FunctionSpinal Cord CompressionParaplegiaNeural Tube DefectsExercise TherapyElectric Stimulation TherapyBrown-Sequard SyndromeBiofeedback, PsychologyWeight-BearingMuscle SpasticitySpinal DysraphismPyramidal TractsMuscle, SkeletalPhysical Therapy ModalitiesPostural BalanceNeurosurgical ProceduresEvoked Potentials, MotorMotor NeuronsExercise TestBiomechanical PhenomenaSpinal Cord NeoplasmsMuscle StrengthLegMuscle ContractionContusionsSpinal Cord IschemiaMotor ActivityMagnetic Resonance ImagingInjections, SpinalH-ReflexSpinal Nerve RootsSpinal NervesSpinal Cord RegenerationSpinal CanalSpinal NeoplasmsDown SyndromeAnesthesia, SpinalMetabolic Syndrome XThoracic VertebraeSpinal DiseasesUmbilical CordLaminectomyPosterior Horn CellsRats, Sprague-DawleyLumbosacral RegionSpinal StenosisNerve RegenerationAxonsGanglia, SpinalSpinal FusionSpinal Cord StimulationSpinal InjuriesAnterior Horn CellsMyelitisDisease Models, AnimalParalysisPainCordotomyNephrotic SyndromeNeuronsMuscular Atrophy, SpinalSjogren's SyndromeHyperalgesiaTime Factors