Spinal StenosisSpinal CordSurvival of Motor Neuron 1 ProteinMuscular Atrophy, SpinalSpinal Cord InjuriesCervical VertebraeLumbar VertebraeSpinal InjuriesDecompression, SurgicalSpinal CanalLaminectomySpinal Cord CompressionSpinal DiseasesSpineSpinal FusionSpinal Cord DiseasesSpondylolisthesisRadiculopathySpinal Cord NeoplasmsLigamentum FlavumSpinal Nerve RootsIntervertebral Disc DisplacementInjections, EpiduralMyelographyCarotid StenosisLumbosacral RegionSpondylosisAortic Valve StenosisSpinal NeoplasmsInjections, SpinalSpinal FracturesSpinal OsteophytosisThoracic VertebraeDislocationsLongitudinal LigamentsMagnetic Resonance ImagingSpinal Cord IschemiaTractionTreatment OutcomeAxisSpinal NervesNeck InjuriesCoronary StenosisPain MeasurementAtlanto-Axial JointNeurosurgical ProceduresOrthopedic ProceduresQuadriplegiaSciaticaCervical AtlasTomography, X-Ray ComputedEpidural SpaceAnesthesia, SpinalTracheal StenosisDiskectomyOdontoid ProcessPolyradiculopathyLow Back PainParaplegiaInternal FixatorsZygapophyseal JointBack PainDisability EvaluationIntervertebral DiscNeck PainRecovery of FunctionRetrospective StudiesDura MaterSacrumMotor NeuronsLordosisIntermittent ClaudicationOssification of Posterior Longitudinal LigamentImmobilizationPainFollow-Up StudiesCauda EquinaFluoroscopyIntervertebral Disc DegenerationProstheses and ImplantsPyloric StenosisOrthopedic Fixation DevicesConstriction, PathologicMitral Valve StenosisTuberculosis, SpinalAtlanto-Occipital JointSpinal Cord RegenerationAnesthetics, LocalPulmonary Valve StenosisRange of Motion, ArticularProspective StudiesJoint InstabilityPostoperative ComplicationsFailed Back Surgery SyndromeBone ScrewsSteroidsTime FactorsSpinal CurvaturesLaryngoscopesNeck