CraniotomyDecompression, SurgicalDecompressionDecompression SicknessDivingNeurosurgical ProceduresSpinal Cord CompressionLaminectomyPneumocephalusMicrovascular Decompression SurgeryTrigeminal NeuralgiaFrontal BoneMicrosurgerySpinal StenosisNerve Compression SyndromesDura MaterHematoma, Subdural, AcuteArnold-Chiari MalformationSpinal FusionCervical VertebraeTrephiningDiskectomy, PercutaneousPostoperative ComplicationsOrbitTomography, X-Ray ComputedExophthalmosSyringomyeliaLumbar VertebraeMagnetic Resonance ImagingTreatment OutcomeArachnoid CystsHematoma, SubduralEmbolism, AirMeningeal NeoplasmsHead Injuries, PenetratingBrain NeoplasmsMeningiomaDelayed Emergence from AnesthesiaNoble GasesIntracranial AneurysmSurgical Fixation DevicesSupratentorial NeoplasmsFrontal SinusIntervertebral Disc DisplacementSpondylosisHematoma, Epidural, CranialCranial Fossa, PosteriorForamen MagnumSubdural SpaceDiskectomyRetrospective StudiesThoracic VertebraeHyperbaric OxygenationEndoscopyGlasgow Coma ScaleCerebellar DiseasesGraves OphthalmopathyPolyradiculopathyHematoma, Subdural, ChronicOssification of Posterior Longitudinal LigamentIntubation, GastrointestinalCerebrospinal Fluid RhinorrheaHemifacial SpasmTemporal BoneRadiculopathyTrigeminal NerveSurgical Procedures, Minimally InvasiveCranial Fossa, AnteriorSpinal OsteophytosisFemur Head NecrosisFourth VentricleSpinal Cord DiseasesStereotaxic TechniquesArachnoidSpinal DiseasesBrain AbscessMonitoring, IntraoperativeSacrumLigamentum FlavumNeurosurgeryOccipital BoneCraniopharyngiomaHematoceleAtmospheric PressureSpinal CanalSurgical InstrumentsPlatybasiaTuberculosis, SpinalIntracranial PressureSpondylolisthesisCompartment SyndromesHematoma, Epidural, SpinalFollow-Up StudiesParaparesisCerebral AngiographyVentriculostomySurgical FlapsSkull BaseConsciousness MonitorsHelium