Pelvis Biomechanics; Computational Experiment Design; Muscle and joint forces
Abstract :
[en] Biomechanics of the human pelvis and the associated implants are still a medical and engineering debated topic. Today, no biomechanical testing setup is dedicated to pelvis testing and associated reconstructive implants with accepted clinical relevance. This paper uses the Computational Experiment Design procedure to numerically design a biomechanical test stand that emulates the pelvis physiological gait loading. The numerically designed test stand reduces the 57 muscles and joints' contact forces iteratively to only four force actuators. Two hip joints' contact forces and two equivalent muscle forces with a maximum magnitude of 2.3 KN are applied in a bilateral reciprocating action. The stress distribution of the numerical model of the developed test stand is very similar to that of the numerical model of the pelvis with all 57 muscles and joint forces. For instance, at the right arcuate line, the state of stress is identical. However, at the location of superior rami, there is a deviation ranging from 2% to 20% between the two models. The boundary conditions and the nature of loading adopted in this study are more realistic regarding the clinical relevance than state-of-the-art. The numerically developed biomechanical testing setup of the pelvis in this numerical study (part I - Computational Design of Experiments) was found to be valid for the experimental testing of the pelvis. The construct of the testing setup and the experimental testing of an intact pelvis under gait loading is discussed in detail in part II - Experimental Testing.
Disciplines :
Mechanical engineering
Author, co-author :
SOLIMAN, Ahmed Abdelsalam Mohamed ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
Ricci, Pierre-Louis; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
KEDZIORA, Slawomir ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
Kelm, Jens; Chirurgisch Orthopädisches Zentrum Illingen, Illingen, Deutschland
Gerich, Torsten; Centre Hospitalier de Luxembourg, Luxembourg, Luxemburg > Traumatologie
MAAS, Stefan ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
External co-authors :
yes
Language :
English
Title :
Developing a Biomechanical Testing Setup of the Pelvis, Part I - Computational Design of Experiments
Publication date :
May 2023
Journal title :
Journal of Biomechanical Engineering
ISSN :
0148-0731
eISSN :
1528-8951
Publisher :
American Society of Mechanical Engineers (ASME), New-York, United States - New York
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
Funders :
This research is funded by the Department of Engineering of the University of Luxembourg.
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