Neurosurgical ProceduresLaminectomyCraniotomyEmbolism, AirNeurosurgeryNeuronavigationAmrinoneRewarmingIntraoperative PeriodMeningitis, BacterialCentral Nervous System InfectionsMonitoring, IntraoperativeSurgical Wound InfectionPostoperative ComplicationsSpinal Cord CompressionDecompression, SurgicalSpinal StenosisMagnetic Resonance ImagingLumbar VertebraeBrain NeoplasmsLigamentum FlavumCervical VertebraeThoracic VertebraeEpidural SpaceDura MaterArachnoiditisSpinal CanalSpinal Cord DiseasesSpinal NeoplasmsSpinal Cord NeoplasmsCauda EquinaMyelographyIntervertebral Disc DisplacementSpinal OsteophytosisSpinal FusionLumbosacral RegionSpondylolisthesisCervical AtlasSpinal DiseasesHematoma, Epidural, SpinalSpinal Nerve RootsSacrumOssification of Posterior Longitudinal LigamentFailed Back Surgery SyndromeTorsion, MechanicalParaparesisSpineOssification, HeterotopicDiskectomyRadiculopathyTreatment OutcomeInternal FixatorsSyringomyeliaParaplegiaTissue AdhesionsEpidural AbscessKyphosisPolyradiculopathySpinal Cord InjuriesCadaverSciaticaSpinal CordArachnoidBack PainLongitudinal LigamentsSpondylosisArachnoid CystsTabes DorsalisMeningoceleIntervertebral Disc DegenerationForaminotomyAtlanto-Axial JointRetrospective Studies