LaminectomySpinal StenosisSpinal CanalDecompression, SurgicalLumbar VertebraeMyelographySpinal CurvaturesSpinal Cord CompressionDiskectomy, PercutaneousIntervertebral Disc DisplacementForeign-Body MigrationLigamentum FlavumCervical VertebraePostoperative ComplicationsThoracic VertebraeEpidural SpaceArachnoiditisDura MaterSpinal Cord DiseasesSpinal Cord NeoplasmsSpinal NeoplasmsCauda EquinaEquipment FailureSpinal OsteophytosisSpinal FusionLumbosacral RegionTreatment OutcomeSpondylolisthesisCervical AtlasHematoma, Epidural, SpinalSpinal DiseasesSpinal Nerve RootsSacrumOssification of Posterior Longitudinal LigamentFailed Back Surgery SyndromeTorsion, MechanicalParaparesisOssification, HeterotopicSpineDiskectomyRadiculopathySyringomyeliaInternal FixatorsParaplegiaNeurosurgical ProceduresEpidural AbscessTissue AdhesionsPolyradiculopathySpinal Cord InjuriesKyphosisSciaticaSpinal CordMagnetic Resonance ImagingCadaverArachnoidLongitudinal LigamentsBack PainSpondylosisArachnoid CystsTabes DorsalisMeningoceleForaminotomyIntervertebral Disc Degeneration