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Feasibility and reliability of a web-based smartphone application for joint position measurement

Ravi, B; Kapoor, M; Player, D; (2021) Feasibility and reliability of a web-based smartphone application for joint position measurement. Journal of Rehabilitation Medicine 10.2340/16501977-2780. (In press). Green open access

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Abstract

Objective: Measurement of joint angles is usually performed using a simple goniometer, which can often be time-consuming and inaccurate, however smartphones can measure angles, this technology could be used to measure joint position. Studies of smartphone applications for this purpose lack consistency and homogeneity. The aim of the current study is to analyse the reliability and accuracy of 3 inertial motion unit-based smartphone applications for goniometric measurement, using 3 different industry standards as external controls. Methods: In the first 2 phases of the study, measurements of angles between 90° and 165° (simulating knee extension) using 3 smartphone applications were analysed against the 3 industry standards. In the third phase, the smartphone’s raw data was individually analysed against a digital inclinometer across the x, y and z axes. Results and conclusion: Results from the 3 phas-es of this study indicate a high degree of reliability and validity of the applications compared with the industry standards, with no clinically significant deviations. Thus, this technology could be used in a clinical setting. However, further clinical research, focussing on joint motions with greater than a single degree of freedom, is required before the use of such applications for joint position measurement in clinical practice.

Type: Article
Title: Feasibility and reliability of a web-based smartphone application for joint position measurement
Open access status: An open access version is available from UCL Discovery
DOI: 10.2340/16501977-2780
Publisher version: https://doi.org/10.2340/16501977-2780
Language: English
Additional information: All articles are licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci > Department of Ortho and MSK Science
URI: https://discovery.ucl.ac.uk/id/eprint/10122984
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