Table 3.

“Minor Criteria” for PJIS as set out in the 2018 International Consensus Meeting (ICM) of Orthopaedic Infections.

Unexpected wound drainage	4
Single positive tissue culture with a virulent organism	3
Single positive tissue culture with a low-virulent organism	1
Second positive tissue culture (identical low-virulence organism)	3
Humeral loosening	3
Positive frozen section (5 neutrophils in ≥5 high-power fields)	3
Positive pre-operative aspirate culture	3
Synovial neutrophil percentage >80%	2
Synovial white blood cell count >3000 cells/μL beyond 6 weeks from surgery	2
ESR >30 mm/h	2
CRP >10 mg/L	2
Elevated synovial alpha-defensin	2
Cloudy synovial fluid	2