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Upright trunk and lateral or slight anterior rotation of the pelvis cause the highest proximal femur forces during sideways falls
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Biomedical Engineering and Health Systems, Neuronic Engineering.ORCID iD: 0000-0003-0125-0784
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Biomedical Engineering and Health Systems, Neuronic Engineering.ORCID iD: 0000-0001-6923-4751
2022 (English)In: Frontiers in Bioengineering and Biotechnology, E-ISSN 2296-4185, Vol. 10, article id 1065548Article in journal (Refereed) Published
Abstract [en]

Whole-body models are historically developed for traffic injury prevention, and they are positioned accordingly in the standing or sitting configuration representing pedestrian or occupant postures. Those configurations are appropriate for vehicle accidents or pedestrian-vehicle accidents; however, they are uncommon body posture during a fall accident to the ground. This study aims to investigate the influence of trunk and pelvis angles on the proximal femur forces during sideways falls. For this purpose, a previously developed whole-body model was positioned into different fall configurations varying the trunk and pelvis angles. The trunk angle was varied in steps of 10 degrees from 10 to 80 degrees, and the pelvis rotation was changed every 5 degrees from -20 degrees (rotation toward posterior) to +20 degrees (rotation toward anterior). The simulations were performed on a medium-size male (177 cm, 76 kg) and a small-size female (156 cm, 55 kg), representative for elderly men and women, respectively. The results demonstrated that the highest proximal femur force measured on the femoral head was reached when either male or female model had a 10-degree trunk angle and +10 degrees anterior pelvis rotation.

Place, publisher, year, edition, pages
Frontiers Media SA , 2022. Vol. 10, article id 1065548
Keywords [en]
body posture, trunk angle, pelvis angle, femur forces, sideways falls
National Category
Orthopaedics
Identifiers
URN: urn:nbn:se:kth:diva-323571DOI: 10.3389/fbioe.2022.1065548ISI: 000908729100001PubMedID: 36619387Scopus ID: 2-s2.0-85145878393OAI: oai:DiVA.org:kth-323571DiVA, id: diva2:1734910
Note

QC 20230207

Available from: 2023-02-07 Created: 2023-02-07 Last updated: 2023-02-07Bibliographically approved

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Kleiven, SveinSahandifar, Pooya

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