Decompressive CraniectomyDecompression, SurgicalCraniotomyLaminectomyIntracranial HypertensionSpinal StenosisGlasgow Coma ScaleTrephiningCompartment SyndromesIntracranial PressureSpinal Cord CompressionBrain EdemaLigamentum FlavumLumbar VertebraeNeurosurgical ProceduresGlasgow Outcome ScaleBrain InjuriesHematoma, Subdural, AcuteTreatment OutcomeDura MaterHematoma, Epidural, CranialIntra-Abdominal HypertensionSpinal CanalHematoma, SubduralIntracranial ThrombosisInfarction, Middle Cerebral ArteryCerebral InfarctionSubdural EffusionSkullSinus Thrombosis, IntracranialTomography, X-Ray ComputedSpondylosisLongitudinal LigamentsSpondylolisthesisThoracic VertebraeAbdomenSkin, ArtificialArnold-Chiari MalformationSpinal FusionSpinal Cord DiseasesLaparotomySurgical FlapsSpinal NeoplasmsCervical VertebraeMagnetic Resonance ImagingPostoperative ComplicationsRetrospective StudiesRecovery of FunctionIntervertebral Disc DisplacementDisability EvaluationFollow-Up StudiesConstrictionLow Back PainProspective StudiesVenous ThrombosisCerebrovascular Circulation