Arthritis, PsoriaticArthritis, RheumatoidArthritisPsoriasisArthritis, ExperimentalArthritis, InfectiousArthritis, JuvenileAntirheumatic AgentsArthritis, ReactiveJointsSpondylitis, AnkylosingSynovial MembraneSynovial FluidNail DiseasesRheumatic DiseasesHand JointsSynovitisSeverity of Illness IndexRheumatoid FactorSpondylitisToe JointSpondylarthropathiesReceptors, Tumor Necrosis FactorTumor Necrosis Factor-alphaMethotrexateOsteoarthritisFinger JointArthrographyFoot JointsSpondylarthritisBlood SedimentationAntibodies, MonoclonalPeriostitisDermatologic AgentsImmunoglobulin GHLA-C AntigensTreatment OutcomeAntibodies, Monoclonal, HumanizedSacroiliac JointRheumatologyHLA-B27 AntigenArthritis, GoutyGenetic Predisposition to DiseaseIritisMice, Inbred DBAKnee JointAutoantibodiesInjections, Intra-ArticularDouble-Blind MethodAnti-Inflammatory AgentsDisability EvaluationBiological MarkersJoint DiseasesBiological ProductsEtretinateHLA-B39 Antigen