Pelvic organ prolapse occurs when one or more of the pelvic organs (bladder, uterus, rectum, or small bowel) drop from their normal position and bulge into the vagina. This happens when the muscles and tissues that support these organs become weakened or stretched.
Types of Pelvic Organ Prolapse
Cystocele (Anterior Prolapse)
- The bladder drops down and presses against the front vaginal wall
- Most common type of prolapse
- May cause a bulge you can see or feel
Uterine Prolapse
- The uterus drops down into the vaginal canal
- In severe cases, may protrude outside the vagina
- Can occur even after hysterectomy (vaginal vault prolapse)
Rectocele (Posterior Prolapse)
- The rectum pushes against the back vaginal wall
- May create a bulge in the back wall of the vagina
- Can affect bowel movements
Enterocele
- Small bowel drops down and pushes against the upper vaginal wall
- Often occurs with other types of prolapse
- Less common than other types
Prolapse Severity Grades
Grade 1 (Mild)
- Organs have dropped slightly but remain inside the vagina
- May have minimal symptoms
Grade 2 (Moderate)
- Organs have dropped to near the vaginal opening
- May be visible during straining
Grade 3 (Severe)
- Organs protrude outside the vaginal opening
- Visible bulge beyond the vaginal opening
Grade 4 (Complete)
- Complete protrusion of organs outside the vagina
- Requires immediate medical attention
What’s happening in your body
Your pelvic organs are supported by a complex system of muscles, ligaments, and connective tissue called the pelvic floor. This “hammock” of support:
Pelvic floor muscles: Form the foundation of support, contracting and relaxing to control organ position
Ligaments and fascia: Connective tissues that hold organs in place
Vaginal walls: Provide structural support between organs
When this support system weakens or becomes damaged, organs can shift from their normal position and create a bulge or prolapse.
Risk Factors
Childbirth: Vaginal delivery can stretch and damage supporting tissues
Aging: Natural weakening of muscles and connective tissue
Hormonal changes: Reduced estrogen after menopause affects tissue strength
Chronic straining: From constipation, chronic cough, or heavy lifting
Genetics: Some women have naturally weaker connective tissue
Remember: Prolapse is very common, affecting up to 50% of women who have had children. Many women have mild prolapse without realizing it, and effective treatments are available for all grades of prolapse.