Thomsen Morten G, Latifi Roshan, Kallemose Thomas, Barfod Kristoffer W, Husted Henrik, Troelsen Anders
a Department of Orthopedic Surgery , Copenhagen University Hospital , Hvidovre , Copenhagen , Denmark. .
b Clinical Research Center, Copenhagen University Hospital , Hvidovre , Copenhagen , Denmark.
Acta Orthop. 2016 Jun;87(3):280-5. doi: 10.3109/17453674.2016.1156934. Epub 2016 Mar 3.
Background and purpose - When evaluating the outcome after total knee arthroplasty (TKA), increasing emphasis has been put on patient satisfaction and ability to perform activities of daily living. To address this, the forgotten joint score (FJS) for assessment of knee awareness has been developed. We investigated the validity and reliability of the FJS. Patients and methods - A Danish version of the FJS questionnaire was created according to internationally accepted standards. 360 participants who underwent primary TKA were invited to participate in the study. Of these, 315 were included in a validity study and 150 in a reliability study. Correlation between the Oxford knee score (OKS) and the FJS was examined and test-retest evaluation was performed. A ceiling effect was defined as participants reaching a score within 15% of the maximum achievable score. Results - The validity study revealed a strong correlation between the FJS and the OKS (intraclass correlation coefficient (ICC) = 0.81, 95% CI: 0.77-0.85; p < 0.001). The test-retest evaluation showed almost perfect reliability for the FJS total score (ICC = 0.91, 95% CI: 0.88-0.94) and substantial reliability or better for individual items of the FJS (ICC? 0.79). We found a high level of internal consistency (Cronbach's? = 0.96). The ceiling effect for the FJS was 16%, as compared to 37% for the OKS. Interpretation - The FJS showed good construct validity and test-retest reliability. It had a lower ceiling effect than the OKS. The FJS appears to be a promising tool for evaluation of small differences in knee performance in groups of patients with good clinical results after TKA.
背景与目的——在评估全膝关节置换术（TKA）后的疗效时，患者满意度和日常生活活动能力受到了越来越多的关注。为解决这一问题，已开发出用于评估膝关节感知的遗忘关节评分（FJS）。我们对FJS的有效性和可靠性进行了研究。
患者与方法——根据国际公认标准创建了丹麦语版的FJS问卷。邀请360例接受初次TKA的患者参与本研究。其中，315例纳入有效性研究，150例纳入可靠性研究。对牛津膝关节评分（OKS）与FJS之间的相关性进行了检测，并进行了重测评估。将天花板效应定义为参与者得分在可达到的最高分的15%以内。
结果——有效性研究显示FJS与OKS之间存在强相关性（组内相关系数（ICC）=0.81，95%CI：0.77 - 0.85；p<0.001）。重测评估显示FJS总分具有近乎完美的可靠性（ICC = 0.91，95%CI：0.88 - 0.94），FJS各单项具有较高的可靠性或更好（ICC≥0.79）。我们发现其内部一致性水平较高（Cronbach'sα = 0.96）。FJS的天花板效应为16%，而OKS为37%。
解读——FJS具有良好的结构效度和重测可靠性。其天花板效应低于OKS。FJS似乎是评估TKA术后临床效果良好的患者群体膝关节功能微小差异的一个有前景的工具。
