Study on the influence of the fetus head molding on the biomechanical behavior of the pelvic floor muscles, during vaginal delivery

Journal of Biomechanics
M E T SilvaR M Natal Jorge

Abstract

Pelvic floor injuries during vaginal delivery are considered a significant risk factor to develop pelvic floor dysfunction. The molding of the fetus head during vaginal delivery facilitates the labor progress, since it adjusts to the birth canal geometry. In this work, a finite element model was used to represent the effects induced by the passage of the fetus head on the pelvic floor. The numerical model used for this simulation included the pelvic floor muscles attached to the bones, and a fetus body. The model of the fetus head included the skin and soft tissues, the skull with sutures and fontanelles, and the brain. The fetus head movements during birth in vertex position were simulated: descent, internal rotation and extension. Two models of the fetus head were compared: a rigid and a deformable one, with the inclusion of the cranial sutures. The influence of the fetus head molding on the pelvic floor muscles was analyzed by evaluating their reaction forces, stretch, and stress and strain fields. Additionally, anatomical indices for the molding of the fetal skull were obtained and compared with clinical data. The passage of the deformable fetus head through the birth canal leads to a reduction of 17.3% on the reaction forc...Continue Reading

References

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Citations

Feb 21, 2016·Journal of Biomechanics·Dulce A OliveiraRenato M Natal Jorge
Nov 30, 2015·Journal of the Mechanical Behavior of Biomedical Materials·S TodrosA N Natali
Mar 24, 2016·Biomechanics and Modeling in Mechanobiology·Dulce A OliveiraRenato M Natal Jorge
Aug 26, 2016·Wiley Interdisciplinary Reviews. Systems Biology and Medicine·Xiani YanMartyn P Nash
Nov 22, 2016·Neurourology and Urodynamics·José Antonio García MejidoJosé Antonio Sainz Bueno
Apr 5, 2017·Nature Reviews. Urology·Geertje CallewaertJan Deprest
Jan 10, 2016·Journal of Biomechanical Engineering·Paige V TracyJames A Ashton-Miller
May 25, 2016·Journal of Perinatal Medicine·Christian BambergWolfgang Henrich
Nov 21, 2019·European Journal of Ophthalmology·Mehmet Fuat AlakusHalit Diri
Jul 3, 2019·Interface Focus·Megan R RoutzongSteven D Abramowitch
Nov 2, 2020·International Journal for Numerical Methods in Biomedical Engineering·Rita MouraRenato M Natal
Dec 4, 2020·Journal of Biomechanical Engineering·Sheng Chen, Michele J Grimm
Jan 9, 2018·Journal of the Mechanical Behavior of Biomedical Materials·Paige V TracyJames A Ashton-Miller
Aug 13, 2021·International Journal of Legal Medicine·Mathilde DucloyerFabrice Dedouit

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