Development and Validation of a Simple Diagnostic Tool Predictive of the Aseptic Character of Joint Effusion

Inclusion Criteria: * Adult patient (age ≥ 18 years) * Hospitalized in the conventional hospitalization unit or day hospitalization unit or received in consultation within the Rheumatology or Infectious Diseases units at the Le Mans General Hospital * presenting at least one joint effusion at clinical examination * Interesting a native, nonoperated joint, accessible to a puncture based on clinical markers, determined by palpatory anatomy * Affiliated to social security * No opposition expressed after written information Exclusion Criteria: * General antibiotic therapy in progress or completed less than 15 days before * Failure to perform the arthrocentesis * Person subject to a legal protection measure, not allowing his compliance with the study * Participant already included in another study (exclusivity clause)