Arthritis, RheumatoidArthritisArthritis, ExperimentalArthritis, InfectiousArthritis, JuvenileArthritis, PsoriaticArthritis, ReactiveSynovial MembraneJointsSynovial FluidIschemic Attack, TransientArthritis, GoutyRheumatoid FactorMice, Inbred DBASynovitisOsteoarthritisCollagen Type IISeverity of Illness IndexComplement Membrane Attack ComplexMethotrexateRats, Inbred LewAutoantibodiesBlood SedimentationInjections, Intra-ArticularTumor Necrosis Factor-alphaImmunoglobulin GSeptember 11 Terrorist AttacksRheumatic DiseasesArthrographyRheumatologyKnee JointTreatment OutcomeMetacarpophalangeal JointTerrorismSpondylitis, AnkylosingSulfasalazineAutoimmune DiseasesPeptides, CyclicAntibodies, MonoclonalDisease Models, AnimalGold Sodium ThiomalateWrist JointCollagenRheumatoid NoduleHLA-DRB1 ChainsFinger JointAnti-Inflammatory AgentsTarsal JointsLyme DiseaseReceptors, Tumor Necrosis FactorTime FactorsHLA-DR4 AntigenMigraine DisordersJoint DiseasesHLA-DR AntigensCytokinesCitrullineInflammationSpondylarthropathiesFollow-Up StudiesFoot JointsT-LymphocytesPsoriasisCartilage, ArticularDrug Therapy, CombinationAnkle JointEnzyme-Linked Immunosorbent AssayBiological MarkersEdemaCells, CulturedChronic DiseasePainInterleukin-17Disability EvaluationFreund's AdjuvantTarsus, AnimalTenosynovitisProspective StudiesHLA-B27 AntigenLupus Erythematosus, SystemicOrganogold CompoundsRisk FactorsHand JointsInterleukin-6Case-Control StudiesGlucose-6-Phosphate IsomeraseGenetic Predisposition to DiseasePanic DisorderMice, Inbred C57BLInterleukin 1 Receptor Antagonist ProteinInterleukin-1Cohort StudiesGoutCartilagePrednisoloneImmunoglobulin MPain MeasurementAcute DiseaseAutoantigensDouble-Blind Method