Spinal Nerve RootsSpinal NervesNerve Compression SyndromesPeripheral Nervous System NeoplasmsSpinal CordLumbosacral RegionRadiculopathyLumbar VertebraeNeuralgiaSpinal Cord CompressionSpinal Cord InjuriesInjections, SpinalMagnetic Resonance ImagingSciatic NerveSciaticaPeripheral Nerve InjuriesLigationPeripheral NervesLumbosacral PlexusData CompressionGanglia, SpinalHyperalgesiaCauda EquinaIntervertebral Disc DisplacementPeripheral Nervous System DiseasesNerve FibersNerve BlockSpinal CanalCervical VertebraeSpinal Cord NeoplasmsStockings, CompressionSpinal StenosisRats, Sprague-DawleyMyelographyPainPain MeasurementSacrumLaminectomyEpidural SpaceFractures, CompressionSpinal NeoplasmsSpinal DiseasesSpinal Cord DiseasesPain ThresholdDecompression, SurgicalOptic NerveNerve RegenerationCervical PlexusIntervertebral DiscRhizotomyThoracic VertebraeLow Back PainMononeuropathiesSpinal Fusion