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A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
Published on: May 18, 2015
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Influence of pelvic shape on strain patterns: A computational analysis using finite element mesh morphing techniques.
Zoryana Salo1, Hans Kreder2, Cari Marisa Whyne3
1Sunnybrook Research Institute, Orthopaedic Biomechanics Lab, Holland Bone and Joint Research Program, Toronto, Ontario, Canada; University of Toronto Institute of Biomedical Engineering, Toronto, Ontario, Canada.
Journal of Biomechanics
|January 10, 2021
Summary
Pelvic shape significantly impacts strain patterns, with the gynecoid pelvis exhibiting twice the strain in superior pubic rami compared to the android pelvis. These findings highlight shape-dependent differences in pelvic mechanical behavior.
Area of Science:
- Biomechanics
- Orthopedic research
- Computational modeling
Background:
- The pelvis is crucial for load transmission and locomotion.
- Finite element (FE) morphing accelerates the creation of patient-specific pelvic models for mechanical studies.
Purpose of the Study:
- To create simulated pelvic FE models of android, gynecoid, anthropoid, and platypelloid morphologies.
- To identify strain pattern differences attributed to anatomical shape under physiological loading.
Main Methods:
- Utilized five specimen-specific FE models.
- Reconfigured each model into three distinct morphologies using FE mesh morphing.
- Analyzed strain patterns under physiological loading conditions.
Main Results:
- Significantly higher strains (p=0.040) were observed in the superior pubic rami of gynecoid (female) compared to android (male) pelvic models.
- No significant differences in overall strain were found between other pelvic shape comparisons (p=0.61-0.126).
- Highest strain regions across all models included supra-acetabular areas, superior pubic rami, greater sciatic notch, and sacral regions near L5.
Conclusions:
- Pelvic shape demonstrably influences strain distribution, particularly in the superior pubic rami.
- Understanding shape-related strain variations can enhance insights into sex and patient-specific fracture risks.
- This research supports the development of treatments considering anatomical pelvic differences.
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