ICM 2018 Criteria for PJI
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The International Consensus Meeting on MSK Infection presented their new criteria in 2018
Major Criteria
1. Two positive periprosthetic cultures w/ phenotypically identical organisms
2. A sinus tract communicating with the joint
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Minor Criteria
> or equal to 6 = infected
4-5 = inconclusive
< or equal to 3 = not infected
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2 points for:
Serum CRP 100 in acute or 10 in chronic
or
D-dimer 860 in chronic
1 point for:
ESR 30 in chronic
3 points for:
synovial WBC 10,000 in acute or 3,000 in chronic
or
leuk esterase ++ in acute and ++ in chronic
or
positive alpha defensin
2 points for:
synovial PMN 90 in acute or 70 in chronic
2 points for:
single positive culture
3 points for:
positive histology
3 points for:
intraoperative purulence
ICM Philly website: https://icmphilly.com/
PJI Risk Calculator: https://icmphilly.com/ortho-applications/prosthetic-joint-infection-pji-risk-calculator/