GoldBack PainLow Back PainBackGold Sodium ThiomalateGold CompoundsMetal NanoparticlesBack InjuriesGold AlloysGold Colloid, RadioactiveGold RadioisotopesOrganogold CompoundsAurothioglucoseNanotubesFailed Back Surgery SyndromeAuranofinPain MeasurementGold Sodium ThiosulfateSensitivity and SpecificityLumbar VertebraeMiningLumbosacral RegionLiftingReproducibility of ResultsElectrodesDisability EvaluationChronic PainSurface PropertiesOccupational DiseasesNanotechnologyBiosensing TechniquesNeck PainParticle SizeNanostructuresTime FactorsPhysical Therapy ModalitiesChiropracticQuestionnairesNanoshellsSpinal DiseasesElectrochemistrySilverManipulation, SpinalHuman EngineeringPostureSpineElectrochemical TechniquesIntervertebral DiscThiomalatesProspective StudiesMicroscopy, Electron, TransmissionSurface Plasmon ResonanceNanoparticles