What Is the Normal Trajectory of C‐Reactive Protein, Erythrocyte Sedimentation Rate, Plasma Fibrinogen and D‐Dimer after Two‐Stage Exchange for Periprosthetic Joint Infection?

Abstract

Objective C‐reactive protein (CRP), erythrocyte sedimentation rate (ESR), plasma fibrinogen and D‐Dimer are used as diagnostic biomarkers of prosthetic joint infection (PJI) after total joint arthroplasty (TJA). The purpose of the study was to investigate the normal trajectory of CRP, ESR, plasma fibrinogen and D‐Dimer at different time points after two‐stage exchange arthroplasty for PJI. Methods We studied 53 patients undergoing two‐stage exchange for PJI at five time points: preoperatively (T0), duration of hospital stays (T1), 30 days (T2), 30–90 days (T3), and 90–180 days (T4) after surgery. The medical records of all patients were well documented and carefully reviewed. The Shapiro–Wilk test was utilized to compare the normal distribution for continuous variables, and the nonnormally distributed data were used for Friedmann's one‐way repeat measures analysis of variances. Post hoc Dunnett's test was used to compare each pair of data to find differences from baseline. Results Compare with T0 point, the levels of CRP and ESR increased significantly and reached peak values at T1 point (all P 0.05). Conclusions The study demonstrated the normal trajectory of CRP, ESR, plasma fibrinogen and D‐Dimer at five time points in patients who underwent two‐stage exchange for PJI. Thus, the results have the possibility of providing signs of infection after the patient receives two‐stage exchange arthroplasty for PJI, which can benefit from early treatment.

Keywords

• C‐reactive protein
• D‐Dimer
• Erythrocyte sedimentation rate
• Plasma fibrinogen
• Prosthetic joint infection
• Total joint arthroplasty