LaminectomySpinal Cord CompressionPainDecompression, SurgicalSpinal StenosisLumbar VertebraeLigamentum FlavumCervical VertebraeThoracic VertebraeBack PainEpidural SpaceChronic PainPain ManagementDura MaterArachnoiditisSpinal CanalSpinal Cord DiseasesLow Back PainPain, PostoperativeSpinal NeoplasmsIntervertebral Disc DisplacementSpinal Cord NeoplasmsCauda EquinaMyelographySpinal OsteophytosisLumbosacral RegionPain ThresholdSpinal FusionPain MeasurementSpinal DiseasesSpondylolisthesisSpinal Nerve RootsCervical AtlasHematoma, Epidural, SpinalSacrumFailed Back Surgery SyndromeOssification of Posterior Longitudinal LigamentAbdominal PainNeck PainPain, IntractableSpineRadiculopathyParaparesisDiskectomyOssification, HeterotopicTorsion, MechanicalPelvic PainPain PerceptionSyringomyeliaInternal FixatorsSciaticaFacial PainTreatment OutcomeParaplegiaSpinal CordNeurosurgical ProceduresAcute PainMagnetic Resonance ImagingSpinal Cord InjuriesPain, ReferredTissue AdhesionsEpidural AbscessPolyradiculopathyKyphosisPostoperative ComplicationsCadaverSpondylosisArachnoidLongitudinal LigamentsIntervertebral Disc DegenerationTabes DorsalisArachnoid CystsShoulder PainMeningoceleForaminotomyZygapophyseal JointMusculoskeletal PainAtlanto-Axial JointNerve Compression SyndromesArnold-Chiari MalformationLordosisOdontoid ProcessDislocationsIntervertebral DiscShear StrengthSynovial CystPlatybasiaRange of Motion, ArticularTuberculosis, SpinalAnalgesicsRetrospective Studies