Inter-observer reliability of Kinovea® software in dynamic foot posture analysis in healthy population [version 1; peer review: awaiting peer review]

• Published in: F1000 research 2024, Vol.13, p.1533
• Main Authors: Anestherita, Fitri, Averrouza Hasbiandra, Rifqi, Kusumaningsih, Widjajalaksmi, Lakmudin, Alvin, Handoko, Harrison
• Format: Article
• Language: English
• ISSN: 2046-1402; 2046-1402
• DOI: 10.12688/f1000research.157736.1

Background Dynamic foot posture assessment is essential to determine the pathomechanics of the foot during walking. Currently, there is no affordable method for assessing dynamic foot posture that can be used in a clinical setting. Kinovea, an open-access video analysis-free application, has enabled clinicians to conduct gait analysis at a relatively low cost, but its reliability in assessing dynamic foot posture has not been studied. Methods 32 observations were recorded from various angles throughout the gait cycle, each at varying speeds, and analyzed using Kinovea. Two independent examiners conducted observations to measure the medial longitudinal arch (MLA), first metatarsophalangeal joint (MTP 1), ankle inclination (AI), and calcaneal angle (CA). A third examiner was tasked with comparing the results of intra-class correlation coefficient (ICC) between the two examiners. Result The inter-rater reliability showed promising results despite the observations made at 2, 3, and 4 km/h. MLA and MTP 1 observations remained "excellent" at all speeds, while AI and CA had "good" reliability among observers at 2, 3 and 4 kmph, apart from 4 kmph where AI showed "excellent" reliability. Conclusion In this study, Kinovea showed good and excellent reliability among observers in measuring the MLA, MTP 1, AI, and CA at various speeds. Therefore, a suitable alternative to a 3D motion analyzer may not be readily available in certain facilities.