Table 6 Value of joint aspiration in the diagnosis of infected total knee arthroplasty

Della Valle et al.

I

I

 Aspiration culture

0.8

0.93

0.94

0.84

n.p.

n.p.

 WBC (3.0 × 10³)

0.98 (0.93–1.9)

1

1

0.98 (0.94–1.0)

X

0.02

 Neutrophile-%

0.98 (0.93–1.0)

0.85 (0.75–0.95)

0.83 (0.73–0.94)

0.98 (0.94–1.0)

6.46 (3.75–18.75)

0.03 (0–0.1)

Fink et al.

I

I

 Aspiration culture

0.73 (0.59–0.86)

0.95 (0.91–0.99)

0.85 (0.73–0.97)

0.9 (0.85–0.96)

15.23 (6.64–125.4)

0.29 (0.14–0.45)

Ghanem et al.

I

I

 WBC (3.0 × 10³)

0.91 (0.86–0.95)

0.88 (0.84–0.92)

0.82 (0.76–0.88)

0.94 (0.91–0.97)

7.59 (5.45–11.81)

0.11 (0.05–0.16)

 Neutorphile (64%)

0.95 (0.92–0.98)

0.95 (0.92–0.97)

0.92 (0.87–0.96)

0.97 (0.95–0.99)

18.19 (11.62–38.43)

0.05 (0.02–0.09)

Trampuz et al.

I

I

 WBC (1.7 × 10³)

0.94 (0.86–1.0)

0.88 (0.81–0.94)

0.73 (0.60–0.86)

0.98 (0.95–1.0)

7.76 (4.65–17.92)

0.07 (0.0–0.17)

 Neutrophi (65%)

0.97 (0.91–1.0)

0.98 (0.95–1.0)

0.94 (0.87–1.0)

0.99 (0.97–1.0)

48.04 (19.07–136.76)

0.03 (0.0–0.09)

Zmistowski et al.

I

I

 WBC (3.0 × 10³)

0.93 (0.87–0.99)

0.94 (0.88–0.99)

0.93 (0.87–0.99

0.94(0.88–0.99)

14.35 (7.28–99)

0.07 (0.01–0.14)

 Neutrophile (75%)

0.93 (0.87–0.99)

0.83 (0.75–0.91)

0.84 (0.76–0.92)

0.93 (0.87–0.99)

5.52(3.46–11.62)

0.08 (0.01–0.17)