SciaticaSpineIntervertebral Disc DisplacementRadiculopathyLumbar VertebraePiriformis Muscle SyndromeDiskectomyInjections, EpiduralLow Back PainSpinal DiseasesChymopapainIntervertebral DiscSpinal Nerve RootsNerve Compression SyndromesIntervertebral Disc ChemolysisPain MeasurementLumbosacral PlexusSpinal CanalPolyradiculopathyCervical VertebraeFibrocartilageCauda EquinaPeripheral Nervous System NeoplasmsSacrumLumbosacral Region