Female patient-specific finite element modeling of pelvic organ prolapse (POP)

JOURNAL OF BIOMECHANICS

卷:48

Article

Chen, Zhuo-Wei¹  Joli, Pierre¹  Feng, Zhi-Qiang^1,2  Rahim, Mehdi³  Pirro, Nicolas⁴  Bellemare, Marc-Emmanuel³ 

[1] Univ Evry Val Essonne, Lab Mecan & Energet Evry, Evry, France

[2] Southwest Jiaotong Univ, Sch Mech & Engn, Chengdu, Peoples R China

[3] Lab Sci Informat & Syst, Marseille, France

[4] Hop La Timone, Serv Chirurg Digest, Marseille, France

关键词: Pelvic organ prolapse;    Finite element method;    Soft tissue;    Hyperelasticity;    Deformation;   

DOI  :  10.1016/j.jbiomech.2014.11.039

来源: Elsevier

【 摘 要 】

Pelvic organ prolapse (POP) occurs only in women and becomes more common as women age. However, the surgical practices remain poorly evaluated. The realization of a simulator of the dynamic behavior of the pelvic organs is then identified as a need. It allows the surgeon to estimate the functional impact of his actions before his implementation. In this work, the simulation will be based on a patient-specific approach in which each geometrical model will be carried out starting from magnetic resonance image (MRI) acquisition of pelvic organs of one patient. To determine the strain and stress in the soft biological tissues, hyperelastic constitutive laws are used in the context of finite element analysis. The Yeoh model has been implemented into an in-house finite element code FER to model these organ tissues taking into account large deformations with multiple contacts. The 2D and 3D models are considered in this preliminary study and the results show that our method can help to improve the understanding of different forms of POP. (C) 2014 Elsevier Ltd. All rights reserved.

【 授权许可】

Free