Spinal Nerve RootsSpinal CordSpinal Cord InjuriesNerve Compression SyndromesInjectionsSciatic NerveNerve BlockLumbar VertebraeSpinal NervesSciaticaLumbosacral PlexusInjections, SpinalPeripheral NervesIntervertebral Disc DisplacementSpinal CanalLumbosacral RegionSpinal StenosisCauda EquinaNerve FibersSacrumEpidural SpaceCervical VertebraeSpinal Cord NeoplasmsOptic NerveSpinal DiseasesNerve RegenerationSpinal Cord DiseasesSpinal Cord CompressionLaminectomyTooth RootMyelographySpinal NeoplasmsGanglia, SpinalTrigeminal NerveTibial NerveSpinal FusionDiskectomyPeripheral Nervous System NeoplasmsSural NerveAnesthesia, SpinalDecompression, SurgicalFacial NervePeripheral Nerve InjuriesLow Back PainNerve EndingsCervical PlexusInjections, EpiduralNerve CrushMedian NerveFluoroscopyMagnetic Resonance ImagingDura MaterMotor NeuronsRats, Sprague-DawleyPolyradiculopathyIntervertebral DiscBrachial PlexusInjections, IntravenousAxonsUlnar NervePain MeasurementInjections, IntramuscularFemoral NerveElectric StimulationNeural ConductionAnesthetics, LocalNerve Growth FactorsSpinePeripheral Nervous System DiseasesPainPhrenic NerveThoracic VertebraeThoracic NervesCadaverNerve Growth FactorNeuralgiaNerve Fibers, MyelinatedDisease Models, AnimalInjections, SubcutaneousPlant Root CapInjections, Intra-ArticularSacrococcygeal RegionHyperalgesiaInjections, IntralesionalEpidural NeoplasmsCranial NervesRoot ResorptionPost-Traumatic HeadacheSpinal InjuriesZygapophyseal JointTreatment OutcomeMuscular Atrophy, SpinalRadial NerveNeurons, AfferentSpinal OsteophytosisTime FactorsNerve TissueTibial NeuropathyReflexMandibular Nerve