Pathophysiology of pelvic organ prolapse
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Updated: Oct 26, 2026

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
Published on: April 17, 2019
1Department of Obstetrics and Gynecology, Medical College of Virginia, Virginia Commonwealth University, Richmond, USA.
Insights
Pelvic organ prolapse (POP) often results from pelvic diaphragm weakness, commonly due to childbirth. This weakness stresses pelvic support tissues, leading to prolapse when intra-abdominal pressure increases.
Area of Science:
- Urogynecology and Pelvic Reconstructive Surgery
Background:
- Pelvic organ prolapse (POP) is a prevalent condition affecting women's health.
- It is frequently associated with weakened pelvic diaphragm muscles and compromised endopelvic connective tissue support.
- Increased intra-abdominal pressure exacerbates the condition, leading to organ descent.
Purpose of the Study:
- To elucidate the primary etiological factors contributing to pelvic organ prolapse.
- To understand the biomechanical consequences of pelvic diaphragm weakness on pelvic support structures.
Main Methods:
- This abstract is based on a review of existing literature and clinical understanding of POP.
- The pathophysiology involves the interplay of muscle weakness, tissue stress, and pressure dynamics.
Main Results:
- Pelvic diaphragm weakness is identified as a primary cause of POP.
- Childbirth and labor are implicated as major contributors to pelvic neuropathies and tissue damage.
- Congenital defects, connective tissue disorders, and surgical interventions can also lead to pelvic support deficits.
Conclusions:
- Weakness of the pelvic diaphragm is the principal factor in the development of pelvic organ prolapse.
- Childbirth is a significant risk factor, causing nerve and tissue damage that compromises pelvic support.
- A multifactorial etiology including congenital and iatrogenic factors contributes to POP.
Abstract:
Pelvic organ prolapse is usually caused by weakness of the pelvic diaphragm. Descent of the pelvic diaphragm places stress on the endopelvic connective tissue support system. Subsequent increases in intra-abdominal pressure result in prolapse. In the majority of cases, labor and childbirth are thought to be the primary factors responsible for pelvic neuropathies and tissue damage that predispose to the development of POP. Certain connective tissue defects, congenital defects, and operative procedures also contribute to pelvic support defects.
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