Spinal CanalSpinal CordSpinal StenosisSpinal Cord CompressionSpinal Cord InjuriesSemicircular CanalsCervical VertebraeLumbar VertebraeLaminectomyThoracic VertebraeEar CanalSpinal Cord DiseasesLigamentum FlavumSpinal DiseasesMyelographySpinal NeoplasmsDecompression, SurgicalSpinal FracturesRoot Canal PreparationSpinal FusionSpinal Cord NeoplasmsSpondylosisSpinal Nerve RootsEpidural SpaceCauda EquinaSpineLongitudinal LigamentsRadiculopathyMagnetic Resonance ImagingLumbosacral RegionPolyradiculopathyArnold-Chiari MalformationSacrumIntervertebral Disc DisplacementRoot Canal IrrigantsDura MaterDental Pulp CavityTomography, X-Ray ComputedSpinal InjuriesInjections, SpinalInternal FixatorsSpondylolisthesisRoot Canal Filling MaterialsSpinal NervesSpinal OsteophytosisAnesthesia, SpinalAxisErysipeloidCervical AtlasTractionOssification of Posterior Longitudinal LigamentAchondroplasiaAnal CanalQuadriplegiaIntervertebral DiscTooth ApexNeck InjuriesSubarachnoid SpaceKyphosisNeurilemmomaVertebroplastyScoliosisRibsDislocationsSyringomyeliaBack PainNerve Compression SyndromesNeurosurgical ProceduresForeign-Body MigrationWounds, StabAngiolipomaBone ScrewsPeripheral Nervous System NeoplasmsMeningesEpidural NeoplasmsZygapophyseal JointMuscular Atrophy, SpinalAtlanto-Axial JointCadaverTreatment OutcomeMeningiomaSynovial CystBone Diseases, DevelopmentalDiskectomyLow Back PainSpinal Cord IschemiaOrthopedic Procedures