Dept of Medical and Sport Sciences, University of Cumbria, Carlisle, UK.
J Sport Rehabil. 2015 Jan 13;24(1). doi: 10.1123/jsr.2013-0119. Print 2015 Feb 1.
Clinicians require portable, valid, and cost-effective methods to monitor knee joint-position-sense (JPS) ability.
To examine the criterion-related validity of image-capture JPS measures against an isokinetic-dynamometer (IKD) procedure.
Random crossover design providing a comparison of knee JPS measures from image capture and IKD procedures.
10 healthy participants, 5 female, age 28.0 ± 13.29 y, mass 60.3 ± 9.02 kg, height 1.65 ± 0.07 m, and 5 male, 29.6 ± 10.74 y, mass 73.6 ± 5.86 kg, height 1.75 ± 0.07 m.
The dependent variables were absolute error scores (AES) provided by 2 knee directions (flexion and extension). The independent variables were the method (image capture and IKD).
There was no significant difference between clinical and IKD AES into knee-flexion data (P = .263, r = 0.55). There was a significant difference between clinical and IKD AES into knee-extension data (P = .016, r = .70).
Analysis of photographic images to assess JPS measurements using knee flexion is valid against an IKD positioning method, but JPS measurements using knee extension may not be valid against IKD techniques. However, photo-analysis measurements provided a lower error score using knee-extension data and thus may provide an optimal environment to produce maximal knee JPS acuity. Therefore, clinicians do not need expensive equipment to collect representative JPS ability.
临床医生需要便携式、有效且经济实惠的方法来监测膝关节位置感（JPS）能力。
研究图像采集 JPS 测量与等速测力计（IKD）程序之间的相关有效性。
随机交叉设计，比较来自图像采集和 IKD 程序的膝关节 JPS 测量。
10 名健康参与者，5 名女性，年龄 28.0±13.29 岁，体重 60.3±9.02kg，身高 1.65±0.07m，5 名男性，29.6±10.74 岁，体重 73.6±5.86kg，身高 1.75±0.07m。
两个膝关节方向（屈曲和伸展）的绝对误差评分（AES）为因变量。方法（图像采集和 IKD）为自变量。
膝关节屈曲时，临床和 IKD 的 AES 无显著差异（P=.263，r=0.55）。膝关节伸展时，临床和 IKD 的 AES 有显著差异（P=.016，r=0.70）。
使用膝关节屈曲的图像分析来评估 JPS 测量是有效的，与 IKD 定位方法相对应，但使用膝关节伸展的 JPS 测量可能与 IKD 技术不对应。然而，照片分析测量值在膝关节伸展数据中提供了较低的误差分数，因此可能为产生最大膝关节 JPS 敏锐度提供了最佳环境。因此，临床医生不需要昂贵的设备来收集有代表性的 JPS 能力。
