Arthritis, RheumatoidArthritisArthritis, ExperimentalArthritis, InfectiousArthritis, JuvenileArthritis, PsoriaticArthritis, ReactiveSynovial MembraneJointsSynovial FluidArthritis, GoutySeverity of Illness IndexRheumatoid FactorMice, Inbred DBASynovitisOsteoarthritisTreatment OutcomeCollagen Type IISymptom AssessmentDepressionMethotrexateQuestionnairesAutoantibodiesBlood SedimentationRats, Inbred LewInjections, Intra-ArticularRheumatic DiseasesTumor Necrosis Factor-alphaImmunoglobulin GTime FactorsFollow-Up StudiesKnee JointProspective StudiesArthrographyRheumatologyPainSpondylitis, AnkylosingQuality of LifeDisease Models, AnimalPrevalenceMetacarpophalangeal JointSulfasalazineChronic DiseaseRisk FactorsAutoimmune DiseasesPeptides, CyclicAntibodies, MonoclonalAnti-Inflammatory AgentsPsychiatric Status Rating ScalesBehavioral SymptomsWrist JointJoint DiseasesGold Sodium ThiomalateCross-Sectional StudiesRheumatoid NoduleCollagenFinger JointHLA-DRB1 ChainsLyme DiseaseTarsal JointsCohort StudiesLongitudinal StudiesCase-Control StudiesPain MeasurementReceptors, Tumor Necrosis FactorRetrospective StudiesDrug Therapy, CombinationDisability EvaluationBiological MarkersHLA-DR4 AntigenAffective SymptomsFatigueCytokinesInflammationHLA-DR AntigensEdemaFoot JointsSpondylarthropathiesPsoriasisCitrullineCartilage, ArticularHealth StatusEnzyme-Linked Immunosorbent AssayAnxietyAnkle JointArthralgiaT-LymphocytesTenosynovitisDepressive DisorderGenetic Predisposition to DiseaseHand JointsLupus Erythematosus, SystemicComorbiditySex FactorsFreund's AdjuvantInterleukin-6Interleukin-17PrednisoloneActivities of Daily LivingHLA-B27 Antigen