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Finite element analysis of load transition on sacroiliac joint during bipedal walking

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Title: Finite element analysis of load transition on sacroiliac joint during bipedal walking
Authors: Toyohara, Ryota Browse this author
Kurosawa, Daisuke Browse this author
Hammer, Niels Browse this author
Werner, Michael Browse this author
Honda, Keita Browse this author
Sekiguchi, Yusuke Browse this author
Izumi, Shin-Ichi Browse this author
Murakami, Eiichi Browse this author
Ozawa, Hiroshi Browse this author
Ohashi, Toshiro Browse this author →KAKEN DB
Issue Date: 13-Aug-2020
Publisher: Nature Publishing Group
Journal Title: Scientific reports
Volume: 10
Issue: 1
Start Page: 13683
Publisher DOI: 10.1038/s41598-020-70676-w
Abstract: The sacroiliac joint (SIJ) is burdened with variant loads. However, no methods have allowed to measure objectively how the SIJ deforms during bipedal walking. In this study, in-vivo walking conditions were replicated in a kinematic model combining the finite element method with 3D walking analysis data divided into five phases in order to visualize the load transition on the SIJ and clarify the role of the SIJ. Both models with and without inclusion of the SIJ were investigated. In models with bilateral SIJs, the displacement differed greatly between the sacrum and both hip bones on the SIJ as the boundary. The movements of the sacrum involved a nutation movement in the stance phase and a counter-nutation in the swing phase relative to the ilium. In models without SIJs, the displacement of the pelvis and loads of pelvic ligaments decreased, and the equivalent stress of the SIJs increased compared to the model with SIJs. The walking loads cause distortion of the entire pelvis, and stress concentration at the SIJ are seen due to the morphology of the pelvic ring. However, the SIJs help dissipate the resulting stresses, and the surrounding ligaments are likewise involved in load transmission.
Rights: https://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/79446
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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