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Table 3 Analysis of inflammatory markers in patients with infected and aseptic revision arthroplasty

From: Synovial fluid IL-1β appears useful for the diagnosis of chronic periprosthetic joint infection

Inflammatory maker Hip + knee P value
Infected (n=37) Aseptic (n=56)
ESR (mm/h) 0.04
 Median 35.00 21.00
 P25, P75 (15.00, 50.00) (12.25, 34.00)
CRP (mg/L) <0.01
 Median 19.00 13.18
 P25, P75 (14.40, 32.80) (5.34, 18.45)
SF IL-1β(pg/ml) <0.01
 Median 894.73 34.49
 P25, P75 (455.91, 1779.00) (15.70, 170.33)
PMN % <0.01
 Median 84.26 53.31
 P25, P75 (72.57, 91.65) (49.78, 60.11)
  1. CRP C-reactive protein, ESR erythrocyte sedimentation rate, SF synovial fluid, PMN%, percentage of polymorphonuclear neutrophils