Related Experiment Video
Updated: Jun 8, 2025

Anogenital Distance and Perineal Measurements of the Pelvic Organ Prolapse POP Quantification System
Published on: September 20, 2018
Size of Pelvic Outlet as a Potential Risk Factor of Fecal Incontinence: A Population-Based Exploratory Analysis
Brent Hiramoto1,2, Bryn E Falahee2,3, Mayssan Muftah1,2
1Division of Gastroenterology, Hepatology and Endoscopy, Center for Gastrointestinal Motility, Brigham and Women's Hospital, Boston, Massachusetts, USA.
Introduction:
The impact of pelvic bone structure on fecal incontinence (FI) is unclear. We assessed the association between weight-adjusted pelvic area and FI.
Methods:
This was a population-based analysis of the National Health and Nutrition Examination Survey in 2005-2006. Participants who completed the bowel health survey and dual-energy x-ray absorptiometry were included.
Results:
On multivariable analysis of 2,772 participants, the lowest pelvic area quartile predicted increased FI compared with the third (odds ratio [OR]: 2.05, confidence interval [CI]: 1.18-3.56, P = 0.014) and fourth (OR: 1.94, CI: 1.02-3.70, P = 0.045) quartiles. Sex-stratified analyses found similar association among female patients only.
Discussion:
Small pelvic area on dual-energy x-ray absorptiometry is a potential risk factor of FI.
Related Concept Videos
Inflammatory Bowel Disease V: Surgical Management
Here are some common surgical interventions for IBD:
Abdominal Regions and Quadrants
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
Urinary Bladder
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...

