Table 3.
Positivity and detection rates of pre- and intraoperative tests
| Diagnostic test | All episodes (n = 167) |
|---|---|
| Preoperative diagnostics serum | |
| Increased serum CRP (> 10 mg/l) | 103/124 (83) |
| Increased WBC (> 11/nl) | 45/124 (36) |
| Preoperative diagnostics synovial fluida | 137/167 (82) |
| Increased leukocyte count (absolute or percentage granulocytes) | 105/125 (84) |
| Absolute leukocyte count (> 2000/µl) | 104/125 (83) |
| Percentage granulocytes (> 70%) | 77/110 (70) |
| Positive microbiology (synovial fluid) | 110/167 (66) |
| Intraoperative diagnostics | 163/167 (98) |
| Positive histopathology | 126/145 (87) |
| Positive microbiology | 153/167 (92) |
| Synovial fluid | 81/138 (59) |
| Periprosthetic tissue | 108/162 (67) |
| Sonication | 95/128 (74) |
The results are shown as numbers of episodes (percentages)
aElevated leukocyte count and/or positive microbiology