RadiculopathyIntervertebral DiscIntervertebral Disc DisplacementLow Back PainLumbar VertebraeInjections, EpiduralSpinal Nerve RootsSpinal DiseasesIntervertebral Disc DegenerationBack PainLumbosacral RegionCervical VertebraeFibrocartilageFluoroscopyPain MeasurementSpinal FusionSpinal StenosisDiskectomy, PercutaneousSpinal CanalTotal Disc ReplacementSteroidsChronic PainSpondylosisLigamentum FlavumAnesthetics, LocalDiskectomySpinal OsteophytosisPost-Traumatic HeadacheTreatment OutcomeElectrodiagnosisEpidural SpaceSciaticaMagnetic Resonance ImagingNerve Compression SyndromesElectric Stimulation TherapyBrachial Plexus NeuritisLaminectomyInjections, SpinalNeck PainForaminotomySynovial CystSpinal Cord CompressionPolyradiculopathyHematoma, Epidural, SpinalSacrumLumbosacral PlexusZygapophyseal JointSpinal Cord DiseasesDecompression, SurgicalOutcome Assessment (Health Care)Cauda EquinaParaspinal MusclesProspective StudiesBrachial Plexus NeuropathiesSpondylolisthesisMuscle WeaknessNerve BlockMyelographyFollow-Up StudiesParesthesiaChronic DiseaseManipulation, SpinalPeripheral Nervous System DiseasesDura MaterMeningeal CarcinomatosisBursitisInternal FixatorsTarlov CystsOrthotic DevicesNeurosurgical ProceduresLameness, AnimalMusculoskeletal ManipulationsPhysical ExaminationTriamcinolonePatient Positioning