Pain MeasurementVisual Analog ScalePain, PostoperativeVisual CortexPainEvoked Potentials, VisualVisual PerceptionVisual AcuityTreatment OutcomeVisual FieldsDouble-Blind MethodVisual PathwaysQuestionnairesProspective StudiesAnesthetics, LocalQuality of LifeSeverity of Illness IndexAnalgesics, OpioidReproducibility of ResultsPatient SatisfactionDisability EvaluationAnalgesia, Patient-ControlledTime FactorsAnalgesia, EpiduralPruritusLidocaineLumbar VertebraePain ManagementFollow-Up StudiesCross-Over StudiesSingle-Blind MethodInjections, Intra-ArticularAnesthesia, LocalAnalgesiaPsychometricsPattern Recognition, VisualVertebroplastyBupivacaineAnalysis of VarianceAnalgesicsPhotic StimulationLow Back PainTramadolIntervertebral Disc DisplacementMorphineRange of Motion, ArticularOsteoarthritis, KneeSpinal FusionAnalgesia, ObstetricalRecovery of FunctionFatigueFractures, CompressionDiskectomyFibromyalgiaBack PainPilot ProjectsNerve BlockHealth Status IndicatorsKetorolacRadiculopathyFentanylStatistics, NonparametricAcupuncture AnalgesiaChronic DiseaseVisual Field TestsMagnetic Resonance ImagingVision DisordersMeperidineRetrospective StudiesHealth StatusOutcome Assessment (Health Care)SatiationMolar, ThirdSpinal FracturesPain PerceptionAnalgesics, Non-NarcoticVision, OcularAnesthesia, DentalTranscutaneous Electric Nerve StimulationAppetiteArthralgiaPlacebosSpinal StenosisAnti-Inflammatory Agents, Non-SteroidalFacial PainDyspneaManifest Anxiety ScalePsychomotor PerformancePrilocainePain, IntractableExercise TherapyArthroscopyHungerNeck PainDecompression, SurgicalPsychiatric Status Rating ScalesShoulder PainActivities of Daily LivingArthritis, RheumatoidSurgical Procedures, Minimally Invasive