Pain, PostoperativePain MeasurementPainAnalgesics, OpioidAnalgesia, Patient-ControlledPain ManagementMorphineAnalgesicsAnesthetics, LocalPain ThresholdAnalgesiaChronic PainKetorolacAcute PainBupivacaineTramadolAnalgesia, EpiduralNerve BlockPostoperative Nausea and VomitingPirinitramidePain PerceptionAnalgesics, Non-NarcoticDouble-Blind MethodMolar, ThirdLow Back PainBack PainFentanylAnesthesia, LocalHemorrhoidsHernia, InguinalAbdominal PainNeck PainPain, IntractableTooth ExtractionLidocaineHyperalgesiaCyclohexanecarboxylic AcidsTolmetinInfusions, IntralesionalAmbulatory Surgical ProceduresProspective StudiesThoracotomyAnesthesia, GeneralButorphanolAnti-Inflammatory Agents, Non-SteroidalHydrocodonePelvic PainTreatment OutcomeTrismusAmidesAnesthesia, CaudalMeperidinePiroxicam