Deformation of the pelvic floor muscles during a vaginal delivery

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Parente, MPL (Author) Other; Natal M N Jorge (Author) FEUP; Mascarenhas, T (Author) FMUP; Fernandes, AA (Author) FEUP; Martins, JAC (Author) Other

Journal

Title: International Urogynecology Journal

Vol. 19 No. 1

Pages: 65-71

ISSN: 0937-3462

Indexing

ISI Web of Knowledge - 90 Citations

Scopus - 102 Citations

Scientific classification

FOS: Medical and Health sciences > Clinical medicine

Other information

Authenticus ID: P-004-3QR

DOI: 10.1007/s00192-007-0388-7

Abstract (EN): Pelvic floor dysfunction is a hidden problem with a magnitude unknown to many. Statistics show that one in every ten women will have pelvic floor dysfunction so severe that it will require surgery. Several studies have shown that pelvic floor injuries during a vaginal delivery can be considered a significant factor in the development of urinary incontinence, fecal incontinence, and pelvic organ prolapse. The objective of the present work is to contribute to the clarification of the mechanisms behind pelvic floor disorders related to a vaginal delivery. For this purpose, a numerical simulation based on the finite element method was carried out. The finite element model intends to represent the effects that the passage of a fetal head can induce on the muscles of the pelvic floor, from a mechanical point of view. The model used for the simulation represents the pelvic bones, with the attached pelvic floor muscles and the fetus. In this work, we simulated the movements of the fetus during birth, in vertex position. We simulated the engagement, descent, flexion, internal rotation, and extension of the fetal head. Results for the pelvic floor stretch values obtained during the passage of the fetus head are presented; the deformation field is also shown. The results were obtained using the finite element method and a three-dimensional computer model of the pelvic floor and fetus. The maximum deformation obtained was 0.66 for a vertical displacement of the fetal head of approximately 60 mm.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7