SciaticaPainIntervertebral Disc DisplacementLow Back PainChronic PainPain ManagementPain MeasurementBack PainPain ThresholdRadiculopathyPain, PostoperativeAbdominal PainNeck PainPain, IntractablePelvic PainInjections, EpiduralPain PerceptionPiriformis Muscle SyndromeFacial PainDiskectomyAcute PainPain, ReferredLumbar VertebraeChymopapainShoulder PainMusculoskeletal PainSpinal Nerve RootsNerve Compression SyndromesIntervertebral Disc ChemolysisIntervertebral DiscDisability EvaluationLumbosacral PlexusAnalgesicsPolyradiculopathyTreatment OutcomeSpinal DiseasesNociceptive PainNeuralgiaFibrocartilageSpinal CanalCauda EquinaParesthesiaPeripheral Nervous System NeoplasmsLumbosacral RegionAnesthetics, Local