Department of Surgery, University of Toronto, Population Health Sciences, Research Institute, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8, Canada.
J Clin Epidemiol. 2010 Jul;63(7):774-82. doi: 10.1016/j.jclinepi.2009.08.022. Epub 2009 Dec 11.
Patients before total joint arthroplasty vary in the spectrum and importance of their concerns. The objectives of this study were to evaluate the psychometric properties of the Knee Patient-Specific Index (KPSI) and to determine the type and importance of patients' concerns before and after knee arthroplasty.
A cohort of 119 patients scheduled for elective primary (or revision) total knee arthroplasty were interviewed at two tertiary care teaching hospitals. Patients also completed the Knee Society Scale (KSS), the Short Form 36, the Western Ontario and McMaster University Osteoarthritis Index (WOMAC), and the McMaster Toronto Arthritis Patient Preference Disability Questionnaire (MACTAR).
Patients improved after total knee arthroplasty in all 42 symptoms and physical limitations, except crouching/kneeling and walking up and down stairs. Patients' summated concerns correlated with the WOMAC pain subscale (ranging from 0.72 to 0.79), WOMAC physical function subscale (ranging from 0.72 to 0.76), and KSS (ranging from 0.28 to 0.39). The summated responses changed after knee arthroplasty as demonstrated by the standardized response mean of 1.1.
The KPSI captures individual patient unique preferences for patients undergoing total knee arthroplasty. Patients improved in virtually all aspects of their symptoms and function after surgery, with the exception of crouching/kneeling and knee feeling hot.
全膝关节置换术前患者的关注点存在差异，其重要性也各不相同。本研究旨在评估膝关节患者特异性指数（KPSI）的心理测量学特性，并确定膝关节置换术前和术后患者关注点的类型和重要性。
在两家三级保健教学医院，对 119 例择期行初次（或翻修）全膝关节置换术的患者进行了队列研究。患者还完成了膝关节学会评分（KSS）、36 项简短健康调查量表（SF-36）、西安大略和麦克马斯特大学骨关节炎指数（WOMAC）以及麦克马斯特多伦多关节炎患者偏好残疾问卷（MACTAR）。
所有 42 项症状和躯体限制在全膝关节置换术后均得到改善，除了蹲/跪和上下楼梯。患者的总关注与 WOMAC 疼痛子量表（范围为 0.72 至 0.79）、WOMAC 躯体功能子量表（范围为 0.72 至 0.76）和 KSS（范围为 0.28 至 0.39）相关。膝关节置换术后，总关注的总和发生了变化，其标准化反应均值为 1.1。
KPSI 可捕捉行全膝关节置换术患者的个体独特偏好。患者在术后几乎所有症状和功能方面都得到了改善，除了蹲/跪和膝关节发热。
