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抄録:変形性股関節症に対するセメントレスTHA術後3週までのCRP値解釈の判断基準を作ることを目的に,術後2週および3週時点でのCRP値の平均値および標準偏差を調査した.対象は変形性股関節症に対してセメントレスTHAを行い,感染のなかった110股,平均年齢は62歳(33~80歳)であった.THA術後CRP値(mg/dl)の平均値および標準偏差(SD)は1日目で6.13±2.65,3日目で12.81±4.64,7日目で2.73±2.15,14日目で0.58±0.80,21日目で0.21±0.24であり,術後3日目が最も高く,その後7日目までに急激に低下し,以降は徐々に低下した.平均+2SDを正常の上限と考えると,術後14日では2.18mg/dl,術後21日では0.69mg/dlを超えるものを高値と考えるのが妥当と考える.
Cementless total hip arthroplasty (THA) was performed in 110 osteoarthritic hips (mean age of the patients, 62 years;range 33-80 years), and the kinetics of the C-reactive protein (CRP) levels were studied to obtain a baseline for clinical use of CRP. Patients with complications of any kind were excluded. The mean and standard deviation (SD) of the CRP values (mg/dl) were 6.13±2.65 on postoperative day (POD) 1, 12.81±4.64 on POD 3, 2.73±2.15 on POD 7, 0.58±0.80 on POD 14, and 0.21±0.24 on POD 21. The CRP levels increased postoperatively, peaked on POD 3, then decreased rapidly until day 7, and gradually declined thereafter. We set the cut-off value for the upper limit of the CRP value at POD 14 and POD 21 at 2.18mg/dland 0.69mg/dl, respectively.
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