Uterine Prolapse

Uterine prolapse is the descent of the uterus and cervix into or beyond the vaginal canal due to failure of the pelvic floor support structures. It belongs to the broader spectrum of pelvic organ prolapse (POP), which encompasses herniation of the bladder (cystocele), rectum (rectocele), small bowel (enterocele), and vaginal vault into or through the vaginal walls. Approximately 50% of women who have had at least one vaginal delivery have some measurable degree of anatomical prolapse on examination, though most remain asymptomatic. Between 10 and 20% will seek treatment for bothersome symptoms, and the lifetime risk of undergoing at least one surgical correction is estimated at 12–19%. POP is significantly underreported because many women are embarrassed or assume symptoms are an inevitable part of aging. It affects sexual function, urinary and bowel habits, body image, and overall quality of life — yet responds well to both conservative and surgical treatment when addressed.

Table of Contents

  1. Overview
  2. Anatomy and Pelvic Support
  3. Grading Systems (Baden-Walker and POP-Q)
  4. Risk Factors
  5. Clinical Presentation and Three Compartments
  6. Diagnosis
  7. Pelvic Floor Physical Therapy
  8. Pessaries
  9. Surgical Options
  10. Sacrocolpopexy and Apical Repair
  11. References
  12. Featured Videos

1. Overview

Pelvic organ prolapse (POP) is a form of hernia in which one or more pelvic organs — the bladder, uterus, rectum, or small bowel — descend into or protrude through the vaginal canal because the supporting pelvic floor muscles, fascia, and ligaments have been weakened or damaged. Uterine prolapse specifically refers to the downward displacement of the uterus and cervix along the vaginal axis.

Population-based studies estimate that roughly 50% of women who have had at least one vaginal delivery have some degree of anatomical prolapse detectable on standardized pelvic examination, though many never develop significant symptoms. Symptomatic prolapse that prompts a clinical visit affects 10–20% of women over their lifetime, and an estimated 12–19% of women will ultimately require surgical repair. POP is the leading indication for hysterectomy in women over age 55 in the United States.

Despite its high prevalence, POP is chronically undertreated. Studies show that fewer than half of affected women bring symptoms to their physician, commonly citing embarrassment or a belief that nothing can be done. This silence leads to delayed diagnosis and prolonged impairment of quality of life — including sexual dysfunction, urinary and bowel symptoms, reduced physical activity, and negative body image. Early identification and a stepped-care approach, beginning with conservative pelvic floor rehabilitation, can dramatically improve outcomes with relatively low risk. Surgical repair, when indicated, offers durable relief for the majority of women.

2. Anatomy and Pelvic Support

The pelvic organs are held in position by an integrated system of muscular and connective-tissue support that DeLancey organized into three anatomical levels, each responsible for a distinct segment of the vagina and its adjacent organs.

The levator ani muscle group — comprising the pubococcygeus, iliococcygeus, and puborectalis — forms the muscular floor of the pelvis and provides active, dynamic support. Under normal resting conditions the levator plate is nearly horizontal, which allows intra-abdominal pressure increases (coughing, lifting) to compress the vagina against this muscular shelf rather than force organs downward through the genital hiatus. When the levator ani is damaged or denervated, the genital hiatus widens and the vaginal axis shifts toward vertical, placing the full force of intra-abdominal pressure directly on the connective tissue supports.

Estrogen plays a critical role in maintaining connective tissue elasticity and collagen synthesis within the pelvic ligaments and fasciae. Loss of estrogen at menopause accelerates collagen degradation and reduces the tensile strength of the uterosacral and cardinal ligaments, which is why symptomatic prolapse is most common in the postmenopausal decade.

3. Grading Systems (Baden-Walker and POP-Q)

Two staging systems are in common clinical use. The Baden-Walker halfway system is older and widely used in everyday clinical practice for its simplicity. The Pelvic Organ Prolapse Quantification (POP-Q) system, introduced in 1996 and subsequently adopted by the International Continence Society, provides standardized, reproducible measurements suitable for research and surgical outcome reporting.

Baden-Walker Halfway System

POP-Q System

The POP-Q measures nine anatomical reference points relative to the hymen (negative values = above the hymen; positive values = beyond it). The six primary measurement points are: Aa and Ba (anterior compartment), C and D (apical compartment), and Ap and Bp (posterior compartment). Three additional measurements capture the genital hiatus (gh), perineal body (pb), and total vaginal length (tvl).

The POP-Q system also describes three anatomical compartments that are assessed separately: the anterior compartment (bladder/cystocele, measured at points Aa and Ba), the apical compartment (uterus or post-hysterectomy vaginal vault, measured at C and D), and the posterior compartment (rectum/rectocele or small bowel/enterocele, measured at Ap and Bp). A patient may have prolapse in one, two, or all three compartments simultaneously.

4. Risk Factors

POP is multifactorial. The major categories of risk include obstetric trauma, hormonal changes, chronically elevated intra-abdominal pressure, anatomical and genetic susceptibility, and age.

Obstetric Factors

Hormonal Factors

Chronic Increased Intra-Abdominal Pressure

Anatomical and Genetic Factors

Age

Prevalence rises steeply with age. While anatomical prolapse is common in younger parous women, symptomatic prolapse requiring treatment is most prevalent in women in their 70s and 80s. The combination of cumulative connective tissue aging, post-menopausal estrogen loss, and years of gravitational loading converges to produce clinically significant descent in older women.

5. Clinical Presentation and Three Compartments

Symptoms of POP are closely tied to which compartment is affected and the degree of descent. The most sensitive indicator of clinically significant prolapse is the prolapse extending to or beyond the hymen (POP-Q Stage II or higher).

General Pelvic Symptoms

Anterior Compartment (Cystocele)

Descent of the anterior vaginal wall carries the bladder base downward, distorting urethral and bladder geometry. Symptoms include:

Apical and Uterine Prolapse

Posterior Compartment (Rectocele and Enterocele)

Descent of the posterior vaginal wall allows the rectum (rectocele) or small bowel (enterocele) to herniate into the vaginal lumen. Symptoms include:

Sexual Dysfunction

POP impairs sexual function through dyspareunia (pain with intercourse from mechanical distortion), reduced lubrication and arousal (from associated atrophic changes and psychosocial distress), and avoidance behaviors. Partners may perceive the vaginal bulge during intercourse.

Occult Stress Urinary Incontinence

Some women with large anterior prolapse paradoxically report no urine leakage because the prolapsed bladder kinks the urethra, creating a functional obstruction. When the prolapse is surgically corrected, this kinking is relieved and stress incontinence becomes apparent. A preoperative pessary reduction test — asking the patient to cough or strain with the prolapse manually reduced — unmasks occult incontinence in approximately 30–40% of women with Stage III or IV anterior prolapse, informing the decision to add a concurrent continence procedure.

6. Diagnosis

The diagnosis of POP is clinical, based on history and pelvic examination. No imaging is required for routine cases.

7. Pelvic Floor Physical Therapy

Pelvic floor physical therapy (PFPT) is the recommended first-line treatment for symptomatic POP Stage I through III. It is also used after surgical repair to optimize long-term support and prevent recurrence.

Core Technique: Pelvic Floor Muscle Training (PFMT / Kegel Exercises)

PFMT involves systematic strengthening of the levator ani and other pelvic floor muscles. Supervised PFMT by a trained pelvic floor physiotherapist is substantially more effective than unsupervised home exercise because many women cannot correctly identify their pelvic floor muscles without instruction, and up to 30% contract the wrong muscles (Valsalva or gluteal co-contraction) when given written instructions alone.

Outcomes

The POPPY trial (Hagen et al., 2014) — the largest randomized controlled trial of PFMT for POP — demonstrated that individualized PFMT reduced prolapse symptom severity significantly compared to a control group, with benefit sustained at one year. Meta-analyses show PFMT reduces prolapse stage by at least one grade in 20–30% of women and meaningfully improves symptom severity scores and quality of life in 40–60% of participants.

Adjunct Modalities

Postpartum pelvic floor rehabilitation — initiated as early as 6 weeks after vaginal delivery — is the most effective time to prevent progression from asymptomatic anatomical prolapse to symptomatic disease.

8. Pessaries

A pessary is a removable mechanical support device placed intravaginally to reduce prolapse, restore normal vaginal anatomy, and relieve symptoms. Pessaries are appropriate for women with symptomatic Stage II–IV prolapse who prefer non-surgical management, are medically unfit for surgery, or wish to preserve fertility and defer definitive repair.

Types and Fitting

Fitting requires a trial of different sizes and types with assessment of comfort, ambulation, and voiding after placement. Approximately 20–30% of women cannot retain a pessary satisfactorily due to insufficient perineal support or vaginal anatomy not compatible with available devices.

Maintenance

Complications and Long-Term Use

Long-term success rates for pessary use are 50–75% at one year. Pessary use does not worsen prolapse or preclude later surgery, and many women successfully manage symptoms with pessaries indefinitely without progression to surgical repair.

9. Surgical Options

Surgery is indicated for symptomatic POP Stage III–IV that has not responded adequately to conservative measures, or for Stage II prolapse with significant quality-of-life impact. The three main surgical categories are native tissue repair, mesh-augmented repair, and obliterative procedures.

Native Tissue Repair

Native tissue procedures use the patient's own fascial and connective tissue to reconstruct pelvic support.

Native tissue repair avoids mesh-related complications but carries anatomical recurrence rates of 10–30% over 5–10 years, particularly for the anterior compartment. The OPTIMAL trial demonstrated equivalent outcomes between vaginal USLS and SSLF at 2 years.

Synthetic Mesh

The FDA issued safety communications in 2008 and 2011 regarding transvaginal mesh for POP repair, citing higher complication rates (mesh erosion, dyspareunia, chronic pelvic pain, need for reoperation) compared to native tissue repair without a clear efficacy benefit. In 2019 the FDA ordered manufacturers to stop selling transvaginal mesh products for anterior and posterior compartment POP repair. Transvaginal mesh for POP is therefore largely abandoned in current practice.

By contrast, abdominal and laparoscopic/robotic mesh approaches (sacrocolpopexy) remain the gold standard for apical prolapse, with a proven safety and efficacy profile distinct from transvaginal mesh complications.

Obliterative Procedures

10. Sacrocolpopexy and Apical Repair

Sacrocolpopexy is considered the gold standard surgical procedure for apical compartment prolapse (uterine prolapse or post-hysterectomy vaginal vault prolapse). It provides durable, anatomically correct apical support by bridging the vaginal apex to the anterior longitudinal ligament of the sacrum at S1–S2 using a Y-shaped synthetic mesh graft.

Technique and Approach

The mesh is sutured to the anterior and posterior vaginal walls (over the bladder and rectum, respectively) and to the anterior longitudinal ligament of the sacrum, restoring the normal horizontal vaginal axis. When the uterus is present, the surgeon may perform a concurrent hysterectomy followed by vault suspension, or — increasingly — a hysteropexy (sacrohysteropexy) leaving the uterus in place.

Uterus-Preserving Hysteropexy

Women who wish to retain their uterus — whether for fertility, personal preference, or cultural reasons — are increasingly offered hysteropexy rather than hysterectomy-plus-vault suspension. Sacrohysteropexy (abdominal attachment of the uterus to the sacrum via mesh) and uterosacral ligament hysteropexy (vaginal approach) have demonstrated comparable success rates to hysterectomy-based repair in RCTs, with equivalent mesh erosion rates and shorter operating times. Uterine preservation is now considered a valid and preferred option when appropriate for the individual patient.

Outcomes

Postoperative Recovery

Women are typically advised to avoid lifting objects heavier than 5–10 pounds for 6–8 weeks after sacrocolpopexy and to defer sexual intercourse for 6 weeks to allow mesh integration and vaginal healing. Pelvic floor physical therapy after surgery is strongly recommended to rebuild neuromuscular coordination, prevent constipation-related straining, and reduce recurrence risk. Most women return to full activity within 8–12 weeks of robotic or laparoscopic repair.

11. References

  1. Barber MD, Maher C. Epidemiology and outcome assessment of pelvic organ prolapse. Int Urogynecol J. 2013;24(11):1783–1790. — PMID: 24142054
  2. Bump RC, Mattiasson A, Bo K, et al. The standardization of terminology of female pelvic organ prolapse and pelvic floor dysfunction. Am J Obstet Gynecol. 1996;175(1):10–17. — PMID: 8694033
  3. Maher C, Feiner B, Baessler K, et al. Surgical management of pelvic organ prolapse in women. Cochrane Database Syst Rev. 2013;(4):CD004014. — PMID: 23633316
  4. DeLancey JO. Anatomic aspects of vaginal eversion after hysterectomy. Am J Obstet Gynecol. 1992;166(6 Pt 1):1717–1724. — PMID: 1615983
  5. Hagen S, Stark D, Glazener C, et al. Individualised pelvic floor muscle training in women with pelvic organ prolapse (POPPY): a multicentre randomised controlled trial. Lancet. 2014;383(9919):796–806. — PMID: 24268469
  6. Barber MD, Brubaker L, Nygaard I, et al. Defining success after surgery for pelvic organ prolapse. Obstet Gynecol. 2009;114(3):600–609. — PMID: 19701041
  7. Nygaard I, Barber MD, Burgio KL, et al. Prevalence of symptomatic pelvic floor disorders in US women. JAMA. 2008;300(11):1311–1316. — PMID: 18799443
  8. Subak LL, Waetjen LE, van den Eeden S, et al. Cost of pelvic organ prolapse surgery in the United States. Obstet Gynecol. 2001;98(4):646–651. — PMID: 11576587
  9. Richter HE, Albo ME, Zyczynski HM, et al. Retropubic versus transobturator midurethral slings for stress incontinence. N Engl J Med. 2010;362(22):2066–2076. — PMID: 20479459
  10. Culligan PJ, Salamo L, Murphy M, et al. Long-term success of abdominal sacrocolpopexy using synthetic mesh. Am J Obstet Gynecol. 2002;187(6):1473–1480. — PMID: 12501050
  11. Brubaker L, Cundiff GW, Fine P, et al. Abdominal sacrocolpopexy with Burch colposuspension to reduce urinary stress incontinence. N Engl J Med. 2006;354(15):1557–1566. — PMID: 16611949
  12. Swift SE. The distribution of pelvic organ support in a population of female subjects seen for routine gynecologic health care. Am J Obstet Gynecol. 2000;183(2):277–285. — PMID: 10942459

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