Nakayama Tomoharu, Nakajima Fuka, Yamasaki Hiroshi, Matsushita Takuya
Department of Rehabilitation, Susaki Kuroshio Hospital: 4-30 Midorimachi, Susaki-shi, Kochi 785-8501, Japan.
Kochi University Graduate School of Medicine, Japan.
J Phys Ther Sci. 2023 Jul;35(7):515-519. doi: 10.1589/jpts.35.515. Epub 2023 Jul 1.
[Purpose] We aimed to examine the correlation between the knee extension angles in the sitting and supine positions measured using ImageJ software. [Participants and Methods] A total of 50 legs in 25 healthy participants (17 males and 8 females) were included in our study. The knee extension angle was measured in the sitting and supine positions with the participants actively and maximally extending their knee joint on one side. The participants were photographed from the side with their knees centered in the image. Thereafter, the photographs were imported into the ImageJ image processing software to calculate the knee extension angles. [Results] The mean values of the knee extension angles in the sitting and supine positions were 131.5 ± 11.2° and 132.1 ± 12.2°, respectively, with a correlation coefficient of 0.85. No systematic errors were observed, and the minimal detectable change was 12.9°. [Conclusion] The knee extension angle in the sitting position showed a strong correlation with that in the supine position, with no systematic errors observed. Therefore, measurement of the knee extension angle in the sitting position can be an alternative to its measurement in the supine position.
[目的] 我们旨在研究使用ImageJ软件测量的坐位和仰卧位膝关节伸展角度之间的相关性。[参与者与方法] 本研究纳入了25名健康参与者（17名男性和8名女性）的50条腿。让参与者主动且最大限度地伸展一侧膝关节，分别测量其坐位和仰卧位的膝关节伸展角度。从侧面拍摄参与者的照片，使膝关节位于图像中心。之后，将照片导入ImageJ图像处理软件以计算膝关节伸展角度。[结果] 坐位和仰卧位膝关节伸展角度的平均值分别为131.5±11.2°和132.1±12.2°，相关系数为0.85。未观察到系统误差，最小可检测变化为12.9°。[结论] 坐位膝关节伸展角度与仰卧位膝关节伸展角度呈强相关，未观察到系统误差。因此，坐位膝关节伸展角度的测量可作为仰卧位测量的替代方法。
