Spinal Nerve RootsSpondylosisSpinal NervesSpinal OsteophytosisPeripheral Nervous System NeoplasmsNerve Compression SyndromesSpinal CordRadiculopathyLumbosacral RegionCervical VertebraeLumbar VertebraeSpinal Cord DiseasesSpinal Cord CompressionNeuralgiaIntervertebral Disc DisplacementMagnetic Resonance ImagingSpinal Cord InjuriesSpinal StenosisSpinal CanalInjections, SpinalLaminectomyDiskectomySpinal DiseasesSciatic NerveSpinal FusionSciaticaPeripheral Nerve InjuriesLigationMyelographyPeripheral NervesLumbosacral PlexusGanglia, SpinalSpondylitisHyperalgesiaIntervertebral DiscDecompression, SurgicalOsteochondritisPeripheral Nervous System DiseasesNerve FibersCauda EquinaNerve BlockScheuermann DiseaseSpinal Cord NeoplasmsRats, Sprague-DawleyNeck PainPainSacrumPain MeasurementMusculoskeletal SystemPain ThresholdEpidural SpaceOptic NerveNerve RegenerationCervical PlexusMononeuropathiesRhizotomy