Arthritis, PsoriaticArthritis, RheumatoidRheumatologyArthritisPsoriasisRheumatic DiseasesArthritis, ExperimentalArthritis, JuvenileArthritis, InfectiousAntirheumatic AgentsSpondylarthropathiesJointsToe JointArthritis, ReactiveFinger JointSynovial MembraneSeverity of Illness IndexSpondylitis, AnkylosingSynovial FluidRadiologySynovitisNail DiseasesMusculoskeletal DiseasesReferral and ConsultationHand JointsRheumatoid FactorTreatment OutcomeSpondylitisOsteoarthritisReceptors, Tumor Necrosis FactorMethotrexateTumor Necrosis Factor-alphaOutpatient Clinics, HospitalBlood SedimentationArthrographyFoot JointsEarly DiagnosisAntibodies, MonoclonalSpondylarthritisQuestionnairesImmunoglobulin GPeriostitisDermatologic AgentsArthritis, GoutyHLA-C AntigensAntibodies, Monoclonal, HumanizedMice, Inbred DBASacroiliac JointHLA-B27 AntigenClinical CompetenceGenetic Predisposition to DiseasePhysician's Practice PatternsReproducibility of ResultsAutoantibodiesKnee JointInjections, Intra-ArticularFranceIritisObserver VariationDisability EvaluationAnti-Inflammatory AgentsDouble-Blind MethodCollagen Type IIJoint DiseasesBiological MarkersQuality of Health CareAutoimmune DiseasesCase-Control StudiesCohort StudiesBiological ProductsImmunosuppressive AgentsAge of OnsetRats, Inbred LewDrug Therapy, CombinationQuality of LifeImmunologic Factors