SciaticaRadiculopathyIntervertebral Disc DisplacementSpinal Nerve RootsLumbar VertebraeInjections, EpiduralDiskectomyCervical VertebraeSpinal CanalLow Back PainSpinal StenosisNerve Compression SyndromesIntervertebral DiscLumbosacral RegionPolyradiculopathyLumbosacral PlexusTotal Disc ReplacementPain MeasurementPiriformis Muscle SyndromeSpondylosisSacrumLigamentum FlavumCauda EquinaSpinal DiseasesSpinal OsteophytosisPost-Traumatic HeadacheChymopapainElectrodiagnosisEpidural SpaceFibrocartilageParesthesiaDecompression, SurgicalBrachial Plexus NeuritisLaminectomyNeck PainForaminotomyMagnetic Resonance ImagingSynovial CystSpinal Cord CompressionHematoma, Epidural, SpinalBack PainTreatment OutcomeSpondylolisthesisMuscle WeaknessIntervertebral Disc ChemolysisZygapophyseal JointSpinal Cord DiseasesTriamcinoloneSpinal FusionNeurosurgical ProceduresDisability EvaluationParaspinal MusclesIntervertebral Disc DegenerationMethylprednisolonePhysical Therapy ModalitiesBrachial Plexus NeuropathiesPeripheral Nervous System Neoplasms