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ORIGINAL ARTICLE
Year : 2019  |  Volume : 53  |  Issue : 3  |  Page : 437-441

Temporal value of c-reactive protein and erythrocyte sedimentation rate after total knee arthroplasty in patients with elevated preoperative c-reactive protein: A matched-pair analysis


1 Department of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, South Korea
2 Department of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, South Korea
3 Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea

Correspondence Address:
Prof. Seung-Baik Kang
Department of Orthopaedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, 5 Gil 20, Boramae-Road, Dongjak-Gu, Seoul 07061
South Korea
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ortho.IJOrtho_96_18

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Background: We aimed to determine whether temporal values of C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) after total knee arthroplasty (TKA) differ between patients with and without elevated preoperative CRP. We hypothesized that temporal pattern of CRP and ESR change would differ between the two groups. Materials and Methods: This retrospective study included 30 TKAs with a diagnosis of osteoarthritis with elevated preoperative CRP (>1 mg/dl) without clinical signs and symptoms of infection before surgery (elevated CRP group). Patients without elevated preoperative CRP were matched in a 1:10 fashion according to age, sex, number of comorbidities and whether TKA was unilateral or bilateral (nonelevated CRP group). The temporal values of CRP and ESR after TKA were compared between the two groups until 2 months after surgery. Results: The mean peak values of CRP and ESR after surgery were similar between the two groups in both unilateral and bilateral TKAs. In the unilateral TKA, mean values of CRP and ESR and the proportions of the knees with normal CRP and ESR at 2 months after surgery were similar in the two groups. However, in the bilateral TKA, mean values of CRP and ESR were higher and the proportions of the knees with normal CRP and ESR at 2 months after surgery were lower in the elevated CRP group compared to the nonelevated CRP group. Conclusions: When performing TKA in patients with elevated preoperative CRP, the fact that the levels of CRP and ESR may not be normalized until 2 months after surgery should be considered during followup.


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