Cauda EquinaPolyradiculopathyIntervertebral Disc DisplacementDiskectomyLumbar VertebraePeripheral Nervous System NeoplasmsIntervertebral DiscNerve Compression SyndromesRadiculopathySciaticaLaminectomySpinal Nerve RootsPressureSpinal StenosisDecompression, SurgicalSacrumMyelographyDiskectomy, PercutaneousHerniaSpinal Cord CompressionSpinal DiseasesDura MaterIntervertebral Disc DegenerationIntervertebral Disc ChemolysisLumbosacral RegionInjections, EpiduralMagnetic Resonance ImagingSpinal Cord NeoplasmsLow Back PainBlood PressureHydrostatic PressureCervical VertebraeEncephaloceleBack PainChymopapainSpinal FusionEpendymomaMeningoceleTreatment OutcomeLigamentum FlavumBrown-Sequard SyndromeForensic BallisticsSpinal Cord DiseasesElectrodiagnosisParaparesisSpinal CanalNeurilemmomaSciatic NerveTomography, X-Ray ComputedThoracic VertebraeParagangliomaWounds, GunshotSpinal OsteophytosisUrinary Bladder, NeurogenicDiscitisSpondylosisNeurologic ExaminationSperm MaturationHyperostosis, Diffuse Idiopathic SkeletalReplantationPeripheral NervesPain MeasurementSynovial CystEpidural SpacePeripheral Nervous System DiseasesParaganglioma, Extra-AdrenalNerve FibersOptic NerveArachnoiditisSpineSpinal NeoplasmsHemangioblastomaSubdural SpaceParesthesiaNerve BlockAnesthetics, LocalUrination DisordersFluoroscopyRetrospective StudiesMicrosurgeryOsteochondritis