LaminectomySpinal Cord CompressionDecompression, SurgicalSpinal StenosisLumbar VertebraeLigamentum FlavumCervical VertebraeThoracic VertebraeEpidural SpaceDura MaterArachnoiditisSpinal CanalSpinal Cord DiseasesSpinal NeoplasmsSpinal Cord NeoplasmsCauda EquinaMyelographySpinal OsteophytosisIntervertebral Disc DisplacementSpinal FusionLumbosacral RegionSpondylolisthesisCervical AtlasHematoma, Epidural, SpinalSpinal DiseasesSpinal Nerve RootsSacrumOssification of Posterior Longitudinal LigamentFailed Back Surgery SyndromeVentricular Function, LeftTorsion, MechanicalParaparesisOssification, HeterotopicSpineDiskectomyRadiculopathySyringomyeliaInternal FixatorsVentricular Dysfunction, LeftParaplegiaNeurosurgical ProceduresEpidural AbscessTissue AdhesionsTreatment OutcomePolyradiculopathySpinal Cord InjuriesPostoperative ComplicationsKyphosisCadaverSciaticaSpinal CordMagnetic Resonance ImagingArachnoidLongitudinal LigamentsBack PainArachnoid CystsSpondylosisTabes DorsalisHypertrophy, Left VentricularMeningoceleForaminotomyIntervertebral Disc DegenerationAtlanto-Axial JointArnold-Chiari MalformationZygapophyseal JointLordosisNerve Compression SyndromesOdontoid ProcessShear StrengthSynovial CystDislocationsPlatybasiaTomography, X-Ray ComputedTuberculosis, SpinalAtrial Function, LeftIntervertebral Disc