Table 3 Results of calprotectin, serum CRP, synovial WBC, synovial PMN, histology, microbiology and clinical findings of the confirmed infections according to the modified EBJIS 2021 definition of PJI.

From: Utility of synovial calprotectin lateral flow test to exclude chronic prosthetic joint infection in periprosthetic fractures: a prospective cohort study

Patient

THA or TKA

Calprotectin (mg/ml)

CRP (mg/dl)

WBC (G/L)

PMN (%)

Histology

Microbiology

Sinus Tract

1

THA

14

0.4

1.02

12

Positive

Negative

Negative

2

THA

14

0.2

6

64

Negative

Staphylococcus epidermidis

Negative

3

THA

275

5

14

83

Positive

Negative

Negative

4

THA

14

0.2

0.7

58

Positive

Staphylococcus saccharolyticus

Negative

5

THA

105

14.6

N/A

N/A

Positive

Negative

Negative

6

THA

28

8.8

N/A

N/A

Positive

Negative

Negative

7

THA

85

1.5

1.01

79

Positive

Staphylococcus warneri

Negative

8

THA

119

7.3

N/A

N/A

Positive

Negative

Negative

9

THA

300

21

7.5

64

Negative

Negative

Negative

10

THA

124

0.4

N/A

N/A

Positive

Negative

Negative

11

TKA

217

4.3

1.21

81

Negative

Negative

Negative

12

TKA

96

0.5

0.7

60

Negative

Negative

Positive

13

TKA

172

5.4

0.32

60

Positive

Negative

Negative

14

TKA

256

5.3

8.65

88

Negative

Negative

Negative

  1. THA = Total Hip Arthroplasty; TKA = Total Knee Arthroplasty; N/A = not available; EBJIS 2021, European Bone and Joint Infection society definition of periprosthetic joint infection published in 2021.