Hurkmans E J, van der Esch M, Ostelo R W J G, Knol D, Dekker J, Steultjens M P M
Jan van Breemen Institute, Amsterdam, The Netherlands.
Arthritis Rheum. 2007 Dec 15;57(8):1398-403. doi: 10.1002/art.23082.
To estimate the inter- and intrarater reliability and agreement of instrumented knee joint proprioception measurement in subjects with knee osteoarthritis (OA) and healthy subjects; to assess the effect of variations in the measurement procedure on agreement parameters.
Proprioception was measured by a computer-controlled knee angular motion-detecting device in a movement-detecting task. The angular displacement between the starting position and the position at the instant of movement detection by the subject was recorded. Two raters independently assessed knee joint proprioception. After 14 days the assessment was repeated. Complete data were obtained from 24 subjects with knee OA and 26 healthy subjects. The inter- and intrarater reliability coefficients (intraclass correlation coefficients [ICC]) and inter- and intrarater agreement measures (standard error of measurement [SEM] and minimal detectable difference [MDD]) were calculated. Additionally, the effect of changing the velocity of angular displacement and applying headphone music during the measurement on the absolute error (i.e., SEM and MDD) was estimated at the second occasion.
Interrater reliability was good in subjects with knee OA and healthy subjects (ICC 0.91 and 0.89, respectively). Interrater agreement was higher in subjects with knee OA than in healthy subjects (SEM 2.13 degrees versus 0.43 degrees , MDD 5.90 degrees versus 1.19 degrees ). Intrarater reliability was good in subjects with knee OA and healthy subjects (ICC 0.91 and 0.86, respectively). Intrarater agreement (SEM and MDD) was 2.26 degrees and 6.26 degrees in subjects with knee OA and 0.39 degrees and 1.08 degrees in healthy subjects. The original measurement and the 2 variations in measurement showed comparable measurement errors for subjects with knee OA and healthy subjects.
In knee OA subjects and healthy subjects, knee proprioception measurement shows adequate intra- and interreliability. However, the absolute measurement error is rather high. Therefore, this measurement has limited value in the assessment of individual subjects, but can be recommended for scientific research in groups of individuals.
评估膝关节骨关节炎（OA）患者和健康受试者中仪器化膝关节本体感觉测量的评分者间和评分者内信度及一致性；评估测量程序变化对一致性参数的影响。
在运动检测任务中，通过计算机控制的膝关节角运动检测装置测量本体感觉。记录起始位置与受试者运动检测瞬间位置之间的角位移。两名评分者独立评估膝关节本体感觉。14天后重复评估。从24例膝关节OA患者和26例健康受试者中获得完整数据。计算评分者间和评分者内信度系数（组内相关系数[ICC]）以及评分者间和评分者内一致性测量指标（测量标准误[SEM]和最小可检测差异[MDD]）。此外，在第二次测量时评估角位移速度变化和测量期间播放耳机音乐对绝对误差（即SEM和MDD）的影响。
膝关节OA患者和健康受试者的评分者间信度良好（ICC分别为0.91和0.89）。膝关节OA患者的评分者间一致性高于健康受试者（SEM为2.13°对0.43°，MDD为5.90°对1.19°）。膝关节OA患者和健康受试者的评分者内信度良好（ICC分别为0.91和0.86）。膝关节OA患者的评分者内一致性（SEM和MDD）分别为2.26°和6.26°，健康受试者为0.39°和1.08°。原始测量以及两种测量变化对膝关节OA患者和健康受试者显示出可比的测量误差。
在膝关节OA患者和健康受试者中，膝关节本体感觉测量显示出足够的评分者内和评分者间信度。然而，绝对测量误差相当高。因此，这种测量在个体受试者评估中的价值有限，但可推荐用于个体群体的科学研究。
