Title :

Biomechanical pregnant pelvic system model and numerical simulation of childbirth: impact of delivery on the uterosacral ligaments, preliminary results

Author(s) :

Lepage, Julien [Auteur]
Service de Gynécologie - Obstétrique [Lille]
Jawosi, C [Auteur]
Service de Gynécologie - Obstétrique [Lille]
Lecomte-Grosbras, Pauline [Auteur]
Laboratoire de Mécanique de Lille - FRE 3723 [LML]
Centrale Lille
Brieu, Mathias [Auteur]
Centrale Lille
Laboratoire de Mécanique de Lille - FRE 3723 [LML]
Duriez, Christian [Auteur]
Deformable Robots Simulation Team [DEFROST ]
Cosson, Michel [Auteur]
Service de Gynécologie - Obstétrique [Lille]
Laboratoire de Mécanique de Lille - FRE 3723 [LML]
Rubod, Chrystele [Auteur]
Service de Gynécologie - Obstétrique [Lille]
Laboratoire de Mécanique de Lille - FRE 3723 [LML]

Journal title :

International Urogynecology Journal

Pages :

497-504

Publisher :

Springer Verlag

Publication date :

2015-04

ISSN :

0937-3462

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

INTRODUCTION AND HYPOTHESIS:We created a pregnant woman pelvic model to perform a simulation of delivery to understand the pathophysiology of urogenital prolapse by studying the constraints on the pelvic components (muscles, ...
Show more >INTRODUCTION AND HYPOTHESIS:We created a pregnant woman pelvic model to perform a simulation of delivery to understand the pathophysiology of urogenital prolapse by studying the constraints on the pelvic components (muscles, ligaments, pelvic organs) during childbirth. These simulations will also provide valuable tools to understand and teach obstetrical mechanics.METHODS:We built a numerical model of the pelvic system from a term pregnant woman, using the finite element method on a mesh built from magnetic resonance images of a nulliparous pregnant woman. Mechanical properties of pelvic tissues already determined by the team were adapted to account for pregnancy.RESULTS:The system allows delivery to be simulated. When a fetal head at the 50th percentile for the term goes through the pelvic system, uterosacral ligaments undergo a deformation of around 30 %. Uterosacral ligaments are the major pelvic sustaining structures, their lesion may be a potential cause of urogenital prolapse. We built a model of childbirth as a function of pregnancy term by varying volumes of fetal head and uterus. The impact on uterosacral ligaments is higher when the fetal head is larger.CONCLUSIONS:Our modelling is rather complete considering that it involves many organs including ligaments. It allows us to analyse the effect of childbirth on uterosacral ligaments and to understand how they impact on pelvic statics. First results are promising, but optimisation and future simulations will be needed. We also plan to simulate various delivery scenarios (cephalic, breech presentation, instrumental extraction), which will be useful to study perineal lesions and also to teach obstetrical mechanics.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189

Source :

Harvested from HAL