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The aim of the present study is to investigate whether the serum C-reactive protein (CRP) level can be used as a screening tool for late PJI.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Materials and methods<\/jats:title>\n<jats:p>A cohort of 390 patients with revision surgery of total hip prostheses (200) or total knee prostheses (190) was assessed for late PJI by determining CRP serum level and performing preoperative aspiration with cultivation and intraoperative tissue analyses with cultivation and histologic examination, using the Musculoskeletal Infection Society (MSIS) and International Consensus Meeting (ICM) criteria.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>A total of 180 joints were rated as PJI (prevalence 46%). Of these, 42.8% (77) showed a CRP level below 10\u00a0mg\/L and 28.3% (51) showed a normal CRP level of less than 5\u00a0mg\/L. The 76.9% of the cases with slow-growing bacteria showed a CRP level below 10\u00a0mg\/L, and 61.5% showed a normal CRP level.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>Serum CRP level should not be used as a screening tool to rule out late PJI.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Level of evidence<\/jats:title>\n<jats:p>Level 2 (diagnostic study).<\/jats:p>\n<\/jats:sec>","DOI":"10.1186\/s10195-020-0542-2","type":"journal-article","created":{"date-parts":[[2020,2,24]],"date-time":"2020-02-24T12:07:00Z","timestamp":1582546020000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["C-reactive protein is not a screening tool for late periprosthetic joint infection"],"prefix":"10.1186","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7485-3941","authenticated-orcid":false,"given":"Bernd","family":"Fink","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Schlumberger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julian","family":"Beyersdorff","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Schuster","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,2,24]]},"reference":[{"key":"542_CR1","doi-asserted-by":"publisher","first-page":"1710","DOI":"10.1007\/s11999-008-0209-4","volume":"466","author":"L Pulido","year":"2008","unstructured":"Pulido L, Ghanem E, Joshi A, Purtill JJ, Parvizi J (2008) Periprosthetic joint infection: the incidence, timing, and predisposing factors. 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