LaminectomyDecompressive CraniectomyDecompression, SurgicalSpinal StenosisLigamentum FlavumSpinal Cord CompressionLumbar VertebraeSpondylolisthesisThoracic VertebraeCraniotomyIntracranial HypertensionDura MaterSpinal CanalCervical VertebraeGlasgow Coma ScaleTrephiningNeurosurgical ProceduresCompartment SyndromesSpinal Cord DiseasesSpinal NeoplasmsIntracranial PressureSpinal FusionIntervertebral Disc DisplacementBrain EdemaEpidural SpaceTreatment OutcomeArachnoiditisSpondylosisLongitudinal LigamentsGlasgow Outcome ScaleSpinal Cord NeoplasmsCauda EquinaMyelographySpinal OsteophytosisBrain InjuriesMagnetic Resonance ImagingHematoma, Subdural, AcuteTomography, X-Ray ComputedLumbosacral RegionArnold-Chiari MalformationPostoperative ComplicationsCervical AtlasHematoma, Epidural, SpinalSpinal DiseasesHematoma, Epidural, CranialSpinal Nerve RootsIntra-Abdominal HypertensionSacrumOssification of Posterior Longitudinal LigamentHematoma, SubduralFailed Back Surgery SyndromeIntracranial ThrombosisInfarction, Middle Cerebral ArteryCerebral InfarctionSubdural EffusionSkullSinus Thrombosis, IntracranialTorsion, MechanicalParaparesisRetrospective StudiesOssification, HeterotopicSpineRecovery of FunctionDiskectomy