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Toyohara, R; Kurosawa, D; Hammer, N; Werner, M; Honda, K; Sekiguchi, Y; Izumi, SI; Murakami, E; Ozawa, H; Ohashi, T.
Finite element analysis of load transition on sacroiliac joint during bipedal walking.
Sci Rep. 2020; 10(1):13683-13683 Doi: 10.1038/s41598-020-70676-w [OPEN ACCESS]
Web of Science PubMed FullText FullText_MUG

Co-authors Med Uni Graz: Hammer Niels
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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.
Find related publications in this database (using NLM MeSH Indexing): Adult -; Biomechanical Phenomena -; Computer Simulation -; Finite Element Analysis -; Humans -; Male -; Models, Biological -; Pelvic Bones - physiology; Range of Motion, Articular -; Sacroiliac Joint - physiology; Sacrum - physiology; Stress, Mechanical -; Walking - physiology