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Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_14 | Pages 3 - 3
1 Dec 2019
Goosen J Jacobs A Heesterbeek P Susan S Bovendeert F Meis J
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Aim

Currently, despite a thorough diagnostic work up, around ten percent of the presumed aseptic revisions turn out to have unexpected positive cultures during the revision procedure. The purpose of this study was to evaluate the negative predictive value (ruling out) of the automated multiplex PCR Unyvero i60 implant and tissue infection (ITI) cartridge (U-ITI) system for the detection of microorganisms in synovial fluid obtained intraoperatively.

Methods

A prospective study was conducted with 200 patients undergoing a one-stage knee or hip revision. In all patients six intraoperative tissue cultures were taken and a sample of synovial fluid which was analyzed as a culture and with the multiplex PCR U-ITI system. The primary outcome measure was the negative predictive value (NPV) of the multiplex PCR U-ITI system compared to the intraoperative tissue cultures to reliable rule out an infection.