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KMID : 0361620120470020133
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Journal of the Korean Orthopaedic Association
2012 Volume.47 No. 2 p.133 ~ p.139
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Prediction of Early Postoperative Infection after Arthroplasty Using the C-Reactive Protein Level
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Suh You-Sung
Choi Hyung-Suk
Nho Jae-Hwi
Won Sung-Hun
Choi Jong-Won
Lee Jae-Chul
Park Jong-Seok
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Abstract
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Purpose: C-reactive protein (CRP) has been shown to be useful in the diagnosis of periprosthetic infection. This study analyzed the serial CRP measurements in patients with acute postoperative infection by comparing with the serial CRP measurements in patients without postoperative infection.
Materials and Methods : From 2004 to 2009, 33 patients with acute postoperative infection developed within 4 weeks of surgery were enrolled including 26 cases of hip arthroplasty and 7 cases of total knee arthroplasty. We measured the serial CRP levels in the groups with both deep infection and superfi cial infection. The CRP measurements in the group without postoperative infection were also analyzed based on the changing pattern of CRP.
Results: In the non-infected group, CRP level sharply increased in 2-3 days postoperatively and it showed a continuing downward pattern till the third postoperative week. However, a bimodal curve pattern was obtained in the groups with both deep and superfi cial infection. The group with deep infection showed a second increase in CRP level around the 13th postoperative day and the group with superfi cial infection showed a second increase in CRP level around the 10th postoperative day.
Conclusion:If there are bimodal patterns of CRP after arthroplasty, acute postoperative infections can be suspected. We can treat them effectively without delay by detection of bimodal increase in CRP.
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KEYWORD
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hip, knee, C-reactive protein, infection, arthroplasty
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