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http://dx.doi.org/10.5103/KJSB.2018.28.4.237

Effects of Customized 3D-printed Insoles on the Kinematics of Flat-footed Walking and Running  

Joo, Ji-Yong (Department of Physical Education, College of Education, Chonnam National University)
Kim, Young-Kwan (Department of Physical Education, College of Education, Chonnam National University)
Publication Information
Korean Journal of Applied Biomechanics / v.28, no.4, 2018 , pp. 237-244 More about this Journal
Abstract
Objective: Flat-footed people struggle with excessive ankle joint motion during walking and running. This study aimed to investigate the effects of customized three-dimensional 3D-printed insoles on the kinematics of flat-footed people during daily activities (walking and running). Method: Fifteen subjects (height, $169.20{\pm}2.61cm$; age, $22.87{\pm}8.48years$; navicular bone height, $13.2{\pm}1.00mm$) diagnosed with flat feet in a physical examination participated in this study. Results: The customized 3D-printed insoles did not significantly affect 3D ankle joint angles under walking and running conditions. However, they shifted the trajectory of the center of pressure (COP) laterally during fast walking, which enhanced the load distribution on the foot during the stance phase. Conclusion: The customized 3D-printed insoles somewhat positively affected the pressure distribution of flat-footed people by changing the COP trajectory. Further research including comparisons with customized commercial insoles is needed.
Keywords
3D printing; Insoles; Flat foot;
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Times Cited By KSCI : 4  (Citation Analysis)
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