Accuracy and reliability of a smartphone application for measuring the knee joint angle
| Autor: | Ichiro Kaneko, Yoshinobu Watanabe, Daisuke Oguro, Yasuo Takeuchi, Hazuki Matsuyama, Hirotaka Kawano, Shouta Nishihara, Yuji Honda, Youichiro Konno, Kousuke Kumeta, Naoshi Ogata, Keisuke Ishii, Hiroyuki Oka |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Journal of Physical Therapy Science |
| ISSN: | 2187-5626 0915-5287 |
| Popis: | [Purpose] Recently, a photo-based smartphone application for angle measurement-"Grid line imaging application Professional"-was developed to evaluate joint disease treatments. The aim of this study was to determine the accuracy and reliability of the application. [Participants and Methods] We measured the knee joint of a mannequin using an application and a universal goniometer. Twelve examiners measured eight knee joints of mannequins at different arbitrary angles using the application and a universal goniometer. Correlations between the application and universal goniometer measurements were examined using scatter plots and correlation coefficients. Systematic errors of the application were visually confirmed using the Bland-Altman method. Intra-class correlation coefficients were used to evaluate the inter-examiner reliability of the application. [Results] The application and universal goniometer measurements showed a good correlation (r=0.99) and no systematic error. The intra-class correlation coefficient for inter-examiner reliability was 0.999. Furthermore, to evaluate intra-examiner reliability, six examiners measured six different knee joints twice using the application on a 2-day interval. The intra-class correlation coefficient for intra-examiner reliability was 0.982. [Conclusion] The accuracy of the application was equivalent to that of a universal goniometer, and both the inter- and intra-examiner reliabilities of the application were almost perfect. |
| Databáze: | OpenAIRE |
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