Prosthetic Joint Infection Score of Zimmerli

pain

none

0

slight, occasional

1

severe requiring pain medication, pain limits mobility

2

major with severe limits on mobility

3

fever

< 37°C

0

37 to 37.9°C

1

38 to 38.5°C

2

>= 38.6 °C

3

wound redness

absent

0

present

1

wound warmth

same as adjacent skin

0

detectable difference

1

significant difference (>= 1°C)

2

wound sinus tract

absent

0

present

3

wound induration

none

0

< 2 square cm

1

>= 2 square cm

2

radiology score

no signs of infection

0

periprosthetic demineralization OR loosening at the bone cement interface OR lucent zone at bone-cement interface OR implant wandering

1

pathologic dislocation or slipping of the prosthesis

2

CRP

< 5 mg/L

0

5 to 10 mg/L

1

11 to 20 mg/L

2

21 to 50 mg/L

3

> 50 mg/L

4