Pain MeasurementVisual Analog ScalePain, PostoperativeVisual CortexPainEvoked Potentials, VisualVisual PerceptionVisual AcuityVisual FieldsTreatment OutcomeDouble-Blind MethodVisual PathwaysAnesthetics, LocalProspective StudiesQuestionnairesQuality of LifeSeverity of Illness IndexAnalgesics, OpioidAnalgesia, Patient-ControlledPatient SatisfactionDisability EvaluationAnalgesia, EpiduralPruritusLidocaineTime FactorsReproducibility of ResultsLumbar VertebraeInjections, Intra-ArticularPain ManagementAnesthesia, LocalCross-Over StudiesAnalgesiaSingle-Blind MethodPattern Recognition, VisualFollow-Up StudiesVertebroplastyBupivacaineAnalgesicsPhotic StimulationTramadolLow Back PainIntervertebral Disc DisplacementMorphinePsychometricsAnalysis of VarianceSpinal FusionRange of Motion, ArticularAnalgesia, ObstetricalOsteoarthritis, KneeFractures, CompressionDiskectomyBack PainFibromyalgiaFatigueRecovery of FunctionNerve BlockKetorolacRadiculopathyFentanylPilot ProjectsAcupuncture AnalgesiaVisual Field TestsMeperidineHealth Status IndicatorsSatiationMolar, ThirdStatistics, NonparametricPain PerceptionSpinal FracturesAnesthesia, DentalVision, OcularVision DisordersAnalgesics, Non-NarcoticTranscutaneous Electric Nerve StimulationChronic DiseaseAppetiteSpinal StenosisArthralgiaPain, IntractableFacial PainAnti-Inflammatory Agents, Non-SteroidalMagnetic Resonance ImagingPrilocaineDyspneaManifest Anxiety ScalePlacebosArthroscopyRetrospective StudiesActivities of Daily LivingHealth StatusDecompression, SurgicalHungerExercise TherapyNeck PainShoulder PainPsychomotor PerformanceSurgical Procedures, Minimally InvasiveDiclofenacTooth ExtractionNeedles