Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Obstet Gynecol. 2003 Jan;101(1):46-53.

The appearance of levator ani muscle abnormalities in magnetic resonance images after vaginal delivery.

Author information

  • 1University of Michigan, Ann Arbor, Michigan 48109-0276, USA. delancey@med.umich.edu

Abstract

OBJECTIVE:

To describe the appearance and occurrence of abnormalities in the levator ani muscle seen on magnetic resonance imaging (MRI) in nulliparous women and in women after their first vaginal birth.

METHODS:

Multiplanar proton density magnetic resonance images were obtained at 0.5-cm intervals from 80 nulliparous and 160 vaginally primiparous women. These had been previously obtained in a study of stress incontinence, and half the primiparas had stress incontinence. All scans were reviewed independently by at least two examiners blinded to parity and continence status.

RESULTS:

No levator ani defects were identified in nulliparous women. Thirty-two primiparous women (20%) had a visible defect in the levator ani muscle. Defects were identified in the pubovisceral portion of the levator ani in 29 women and in the iliococcygeal portion in three women. Within the pubovisceral muscle, both unilateral and bilateral defects were found. The extent of abnormality varied from one individual to the next. Of the 32 women with defects, 23 (71%) were in the stress incontinent group.

CONCLUSION:

Abnormalities in the levator ani muscle are present on MRI after a vaginal delivery but are not found in nulliparas.

PMID:
12517644
[PubMed - indexed for MEDLINE]
PMCID:
PMC1226664
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for PubMed Central
    Loading ...
    Write to the Help Desk