Arthritis, PsoriaticPsoriasisArthritisArthritis, RheumatoidArthritis, ExperimentalArthritis, InfectiousArthritis, JuvenileJointsSynovial MembraneArthritis, ReactiveSynovial FluidSynovitisSpondylitis, AnkylosingAntirheumatic AgentsOsteoarthritisRheumatoid FactorSeverity of Illness IndexSpondylarthropathiesDermatologic AgentsRheumatic DiseasesTumor Necrosis Factor-alphaNail DiseasesMice, Inbred DBAMethotrexateFinger JointArthritis, GoutyReceptors, Tumor Necrosis FactorFoot JointsSpondylarthritisInjections, Intra-ArticularHand JointsCollagen Type IIAntibodies, MonoclonalImmunoglobulin GRheumatologyTreatment OutcomeArthrographySpondylitisBlood SedimentationKnee JointHLA-C AntigensAutoantibodiesToe JointTenosynovitisHLA-B27 AntigenGenetic Predisposition to DiseaseDisease Models, AnimalAnti-Inflammatory AgentsInflammationRats, Inbred LewAutoimmune DiseasesJoint DiseasesAntibodies, Monoclonal, HumanizedPeriostitisMetacarpophalangeal JointCytokinesCartilage, ArticularBiological MarkersGlucose-6-Phosphate IsomeraseOsteoclastsCase-Control StudiesGoutSkinSacroiliac JointPUVA TherapyUltraviolet TherapyT-LymphocytesPeptides, CyclicEnzyme-Linked Immunosorbent AssayBone ResorptionWrist JointCohort StudiesAnti-Inflammatory Agents, Non-SteroidalInterleukin-17Mice, Inbred C57BLCollagenMice, KnockoutIritisChronic DiseaseDisability EvaluationDouble-Blind MethodMice, TransgenicCells, CulturedEdemaInterleukin-1betaImmunosuppressive AgentsStatistics, NonparametricBiological ProductsTime FactorsArthralgiaHLA-DR AntigensFollow-Up StudiesQuestionnairesAge of OnsetImmunologic FactorsProspective StudiesQuality of LifeGlucocorticoidsInterleukin-1Hindlimb