Fig. 1From: Synovial fluid IL-1β appears useful for the diagnosis of chronic periprosthetic joint infectionReceiver operating characteristic curves (ROCs). ROCs with the corresponding area under the curve (AUC) of various inflammatory markers of patients with PJI after TJA. SF synovial fluid, PJI periprosthetic joint infection, CRP C-reactive protein, ESR erythrocyte sedimentation rate, PMN% percentage of polymorphnuclearBack to article page