Investigating the birth-related caudal maternal pelvic floor muscle injury: The consequences of low cycle fatigue damage.

ABSTRACT:

Background

One of the major causes of pelvic organ prolapse is pelvic muscle injury sustained during a vaginal delivery. The most common site of this injury is where the pubovisceral muscle takes origin from the pubic bone. We hypothesized that it is possible for low-cycle material fatigue to occur at the origin of the pubovisceral muscle under the large repetitive loads associated with pushing during the second stage of a difficult labor.

Purpose

The main goal was to test if the origin of the pubovisceral muscle accumulates material damage under sub-maximal cyclic tensile loading and identify any microscopic evidence of such damage.

Methods

Twenty origins of the ishiococcygeous muscle (homologous to the pubovisceral muscle in women) were dissected from female sheep p

SUBMITTER: Vila Pouca MCP 

PROVIDER: S-EPMC9016363 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature