RadiculopathyIrritantsSpinal Nerve RootsSkin Irritancy TestsCervical VertebraeLumbar VertebraeIntervertebral Disc DisplacementSpinal StenosisSpinal CanalInjections, EpiduralTotal Disc ReplacementSpondylosisLumbosacral RegionLigamentum FlavumDiskectomySpinal OsteophytosisPost-Traumatic HeadacheDermatitis, IrritantElectrodiagnosisIntervertebral DiscEpidural SpaceSciaticaNerve Compression SyndromesBrachial Plexus NeuritisLaminectomyLow Back PainNeck PainForaminotomySynovial CystSpinal Cord CompressionPolyradiculopathyHematoma, Epidural, SpinalSacrumAnimal Testing AlternativesLumbosacral PlexusZygapophyseal JointPain MeasurementSpinal Cord DiseasesDecompression, SurgicalSpinal FusionCauda EquinaSpinal DiseasesParaspinal MusclesTreatment OutcomeMagnetic Resonance ImagingEye DiseasesBrachial Plexus NeuropathiesSpondylolisthesisMuscle WeaknessNerve BlockMyelographyFluoroscopyParesthesiaManipulation, SpinalBack PainPeripheral Nervous System DiseasesDura MaterMeningeal CarcinomatosisBursitisInternal FixatorsErythemaTarlov CystsOrthotic DevicesNeurosurgical ProceduresFibrocartilageLameness, AnimalMusculoskeletal ManipulationsPhysical ExaminationTriamcinoloneAdministration, TopicalPatient PositioningTomography, X-Ray ComputedEyeSurgical Procedures, Minimally Invasive2-PropanolArthroplasty