LaminectomyDecompression, SurgicalDecompressive CraniectomySpinal StenosisLigamentum FlavumSpinal Cord CompressionLumbar VertebraeDecompressionSpondylolisthesisThoracic VertebraeDecompression SicknessCraniotomyIntracranial HypertensionCervical VertebraeDura MaterSpinal CanalSpinal FusionNeurosurgical ProceduresSpinal Cord DiseasesCompartment SyndromesIntervertebral Disc DisplacementSpinal NeoplasmsGlasgow Coma ScaleTreatment OutcomeArnold-Chiari MalformationTrephiningSpondylosisIntracranial PressureDivingEpidural SpaceSpinal OsteophytosisLongitudinal LigamentsMyelographyBrain EdemaSyringomyeliaCauda EquinaNerve Compression SyndromesPostoperative ComplicationsMagnetic Resonance ImagingSpinal DiseasesArachnoiditisOssification of Posterior Longitudinal LigamentHematoma, Epidural, SpinalTomography, X-Ray ComputedSacrumSpinal Cord NeoplasmsDiskectomyLumbosacral RegionGlasgow Outcome ScaleIntra-Abdominal HypertensionRadiculopathyParaparesisBrain InjuriesHematoma, Subdural, AcuteCervical AtlasMicrovascular Decompression SurgeryTrigeminal NeuralgiaPolyradiculopathySpinal Nerve RootsRetrospective StudiesInternal FixatorsHematoma, Epidural, CranialRecovery of FunctionOssification, HeterotopicParaplegiaForamen MagnumEpidural AbscessFollow-Up StudiesHematoma, SubduralSkullKyphosisSpineDiskectomy, PercutaneousFailed Back Surgery SyndromeIntracranial ThrombosisInfarction, Middle Cerebral ArteryCerebral InfarctionSubdural EffusionAbdomenPlatybasiaMicrosurgeryTuberculosis, SpinalSinus Thrombosis, IntracranialLow Back PainAtlanto-Axial JointTorsion, MechanicalArachnoidEmbolism, AirSpinal Cord InjuriesBack PainSciatica