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Recommended thresholds for the minor diagnostic criteria [69]
| Criterion | Acute PJI (< 90 days) | Chronic PJI (> 90 days) |
|---|---|---|
| ESR (mm/h) | No threshold determined | 30 |
| CRP (mg/L) | 100 | 10 |
| Synovia white blood cell count (cells/μL) | 10,000 | 3000 |
| Synovial Polymorphonuclear (%) | 90 | 80 |
| Leukocyte esterase | + or ++ | |
| Histological analysis | > 5 neutrophils per high power field (HPF) in at least 5 HPFs | |
