A Simulation Analysis of Maternal Pelvic Floor Muscle
| Autor: | Yang Song, Ee-Chon Teo, Jue Zhu, Shuaijun Ren, Xu-Hao Huang, Yaodong Gu, Yajie Gao, Jialin Li, Mingshuwen Yang, Zhenglun Yang, Rongrong Xuan |
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| Přispěvatelé: | School of Mechanical and Aerospace Engineering |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Health
Toxicology and Mutagenesis Levator ani muscle Finite Element Analysis finite element analysis Pelvic Floor Muscle Pelvic Floor Disorders Article Pregnancy medicine Humans Muscle Strength Aged Orthodontics Pelvic MRI Pelvic floor Biparietal diameter medicine.diagnostic_test business.industry Public Health Environmental and Occupational Health Magnetic resonance imaging Pelvic Floor Middle Aged Delivery mode Delivery Obstetric Skeleton (computer programming) medicine.anatomical_structure Mechanical engineering [Engineering] Quality of Life Medicine Female delivery business MRI |
| Zdroj: | International Journal of Environmental Research and Public Health Volume 18 Issue 20 International Journal of Environmental Research and Public Health, Vol 18, Iss 10821, p 10821 (2021) |
| ISSN: | 1660-4601 1661-7827 1197-2203 |
| Popis: | Pelvic floor disorder (PFD) is a common disease affecting the quality of life of middle-aged and elderly women. Pelvic floor muscle (PFM) damage is related to delivery mode, fetal size, and parity. Spontaneous vaginal delivery causes especially great damage to PFM. The purpose of this study was to summarize the characteristics of PFM action during the second stage of labor by collecting female pelvic MRI (magnetic resonance imaging) data and, further, to try to investigate the potential pathogenetic mechanism of PFD. A three-dimensional model was established to study the influence factors and characteristics of PFM strength. In the second stage of labor, the mechanical responses, possible damage, and the key parts of postpartum lesions of PFM due to the different fetal biparietal diameter (BPD) sizes were analyzed by finite element simulations. The research results showed that the peak stress and strain of PFM appeared at one-half of the delivery period and at the attachment point of the pubococcygeus to the skeleton. In addition, during the simulation process, the pubococcygeus was stretched by about 1.2 times and the levator ani muscle was stretched by more than two-fold. There was also greater stress and strain in the middle area of the levator ani muscle and pubococcygeus. According to the statistics, either being too young or in old maternal age will increase the probability of postpartum PFM injury. During delivery, the entire PFM underwent the huge deformation, in which the levator ani muscle and the pubococcygeus were seriously stretched and the attachment point between the pubococcygeus and the skeleton were the places with the highest probability of postpartum lesions. Published version The authors acknowledge the financial supports received from National Natural Science Foundation of China (No.11972203, No.11572162), Zhejiang Province Medical and Health Science and Technology Plan Project(No.2018KY710), Ningbo Public Welfare Science and Technology Plan Project (No.2019C50095), Health Youth Technical Talent Cultivation Special Fund Project (2020SWSQNGG-01), Ningbo Medical Science and Technology Plan (2020Y14), Young Cultivation Fund Project of The Affiliated of School of Medicine of Ningbo University (FYQM-KY-202003), Open Fund Project of Institute of Human Biomechanics of Ningbo University (CJ-HBIO202112), and K.C. Wong Magna Fund in Ningbo University. |
| Databáze: | OpenAIRE |
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