Table 1: Comparison of the diagnostic accuracy of synovial fluid white blood cell count (WBC) with intraoperative histology based on criteria published in the literature [14, 15, 23-25].
|
WBC count in synovial fluid |
Pathologist |
Feldman [14] |
Lonner [25] |
Mirra [23] |
Banit [15] |
Athanasou [24] |
| Cut Off |
> 12000 WBC / mL |
Histologic picture |
5 HPF all showing more than 5 PML |
5 HPF all showing at least 10 PML |
5 HPF one showing at least 5 PML |
1 out of 5 HPFwith more than 10 PML |
10 HPF having an average of more than 1 PML |
| Sensitivity |
1.00 |
0,57 |
0.48 |
0.38 |
0.90 |
0.90 |
0.90 |
| Specificity |
1.00 |
0,96 |
0.96 |
0.98 |
0.71 |
0.84 |
0.67 |
| PPV |
1.00 |
0,86 |
0.83 |
0.89 |
0.54 |
0.70 |
0.51 |
| NPV |
1.00 |
0,86 |
0.83 |
0.81 |
0.95 |
0.95 |
0.95 |
| Accuracy |
1.00 |
0,86 |
0.83 |
0.82 |
0.76 |
0.86 |
0.73 |