From: DAIR for periprosthetic joint infections—One week to save the joint?
Musculoskeletal Infection Society (MSIS) criteria | |
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Periprosthetic joint infection is present when one major criterion is present or three out of five minor criteria exist | |
Major Criteria | • Two positive periprosthetic cultures with phenotypically identical organisms • A sinus tract communicating with the joint |
Minor criteria | • Elevated CRP and ESR • Elevated synovial fluid WBC count or + + change on leukocyte esterase strip • Elevated synovial fluid PMN% • Positive histological analysis of periprosthetic tissue • A single positive culture |