Pelvic Organ Prolapse: What Physiotherapy Achieves and What It Does Not

Pelvic organ prolapse is descent of the vaginal walls, uterus or vaginal vault, felt most often as heaviness, dragging or a bulge, and a supervised programme of pelvic floor muscle training is the first conservative option for symptomatic stage 1 or 2 prolapse: NICE says consider at least 16 weeks of it. What that programme reliably changes is symptoms. What it does not do is put anything back, and no trial claims otherwise¹².

I do not have a prolapse. I have sat in a waiting room next to plenty of women who do, and the sentence I heard most often from them was some version of “they told me it was only a small one”. That is the thing this article exists to unpick, because “small” is a statement about an examination and the symptom is a statement about a day. Read red flags and when to stop and get checked first: a painful or irreducible prolapse is the one presentation here that needs a clinician today.

What prolapse is and what it feels like

Prolapse is a support problem. The vaginal walls, the uterus or, after hysterectomy, the vaginal vault, descend from their usual position because the supporting structures no longer hold them. The compartments have names you may see on a letter: cystocele for the front wall with the bladder behind it, rectocele for the back wall, uterine prolapse for descent of the uterus itself.

The symptoms are usually mechanical rather than painful. Heaviness or dragging that gets worse through the day, an awareness of a bulge, a sense of not emptying the bladder or bowel fully, sometimes a need to reposition to finish. The International Urogynecological Association publishes plain-language leaflets on each of these presentations for exactly this reason: the vocabulary is a barrier long before the treatment is³.

Why the prevalence figures look contradictory

They do not measure the same thing.

• By symptoms: about 3% to 6%. That is the figure produced for the Fifth International Consultation on Incontinence⁴, and a nationally representative sample of 1,961 US women aged 20 and over put it at 2.9%, with a 95% confidence interval of 2.1 to 3.7, defined as seeing or feeling a bulge in or outside the vagina⁵.
• By vaginal examination: up to 50%⁴. NICE records the same: in UK primary care 8.4% of women reported a vaginal bulge or lump, while on examination prolapse is present in up to 50% of women¹.
• In a routine gynaecology clinic population: 76% at stage 1 or above. In 1,004 women aged 18 to 83 attending routine outpatient gynaecology appointments, the POP-Q distribution was 24% stage 0, 38% stage 1, 35% stage 2 and 2% stage 3⁶.
• After the menopause, higher again. Among 16,616 women aged 50 to 79 with a uterus examined at baseline in the Women’s Health Initiative, uterine prolapse was found in 14.2%, cystocele in 34.3% and rectocele in 18.6%⁷.

Roughly a tenfold gap between symptomatic prolapse and anatomical prolapse. Neither number is wrong, and neither is a reason to be told your symptom is universal. That is the whole subject of prolapse symptoms versus prolapse stage, and it is the single most useful distinction on this site.

What the guideline recommends, exactly

Two guidelines, one recommendation, described two ways.

NICE NG123 recommendation 1.7.5 says consider a programme of supervised pelvic floor muscle training for at least 16 weeks as a first option for women with symptomatic POP-Q stage 1 or stage 2 prolapse, and to advise continuing afterwards if the programme is beneficial¹. NICE NG210 recommendation 1.6.13 says consider a supervised programme for at least 4 months for women with symptomatic prolapse that does not extend more than 1 cm beyond the hymen on straining⁸.

Three precision points, because most summaries get at least one of them wrong. The verb is consider, not offer, which is a weaker instruction than the one for stress incontinence. The duration for prolapse is 16 weeks or 4 months, not the three months people quote from the incontinence recommendation. And the two durations are not a disagreement: NG210’s own rationale explains that 16 weeks for prolapse and 3 months for urinary incontinence were simply the most common points at which trials assessed their results. NG210 adds a third case, at least 4 months for women with faecal incontinence and coexisting prolapse⁸, and you should be offered at least one review during the programme and one at the end.

What the trial evidence actually shows

Lead with POPPY, because it is the largest and most recent trial of this question. It randomised 447 women with newly diagnosed symptomatic stage I, II or III prolapse across 25 centres in three countries: 225 to individualised pelvic floor muscle training and 222 to a control group who received a prolapse lifestyle advice leaflet and no muscle training².

At 12 months, on the Pelvic Organ Prolapse Symptom Score which runs from 0 to 28, the training group had improved by a mean of 3.77 points against 2.09 in the control group. The adjusted difference was 1.52 points, 95% confidence interval 0.46 to 2.59, p = 0.0053. The authors concluded that one-to-one pelvic floor muscle training for prolapse is effective for improvement of prolapse symptoms.

Now the parts that rarely get quoted. That is a 1.52 point difference on a 28 point scale: good evidence that the direction is real, modest evidence about the size. Follow-up was 377 women, 84%, at 6 months but only 295, 66%, at 12 months, which is substantial attrition for a primary outcome. And the comparison is against a leaflet, so it tells you what supervised training adds over information, which is the right question but a specific one.

The older Cochrane review of conservative management, from 2011, reported that pooled data from two trials indicated pelvic floor muscle training increases the chance of an improvement in prolapse stage by 17% compared with no training, and concluded there is some evidence of a positive effect on prolapse symptoms and severity⁹. It is a legitimate citation and it is 15 years old, predating POPPY entirely, so quoting it as the current Cochrane evidence is technically true and substantively misleading.

What physiotherapy is aiming at

Symptoms and function, not stage. That sounds like a downgrade and it is not: heaviness at 4pm, whether you can carry shopping upstairs, whether you can finish a run, and whether you empty properly are the things a woman actually lives with, and they are what the trials measured.

The one thing my own physiotherapist said that transfers directly across came at my six week review. She told me she was not going to open by telling me the muscle was stronger; she was going to ask me what I could do in May that I could not do in March. I found that mildly irritating at the time and entirely right afterwards, and it is the same logic that governs a prolapse programme.

A prolapse programme is also rarely only contractions. Constipation and straining load the same structures daily, which is why bowel management is treated as part of the programme rather than an aside: see bowel habit and defaecation technique and constipation and obstructed defaecation. Load and impact get staged rather than banned: see returning to running and lifting. Dose and progression are set on examination, which is covered in pelvic floor exercise programmes explained. And if strengthening makes the heaviness worse rather than better, that is a reason to be reassessed, not to do more: see hypertonic pelvic floor and downtraining.

Where pessaries sit

Alongside, not after. A vaginal pessary is a device fitted by a clinician to support the vaginal walls mechanically, and it works immediately in a way muscle training cannot, while muscle training changes something a device cannot. Plenty of women use both, and the choice is not a ladder with a fixed order. Vaginal pessaries alongside physiotherapy covers what fitting involves. Nothing on this site fits, supplies or recommends a device.

When the conversation turns to surgery

NICE recommendation 1.8.1 says to offer surgery for pelvic organ prolapse to women whose symptoms have not improved with or who have declined non-surgical treatment¹. The second half is the part that gets left out of consultations, and it means a fully informed refusal of a four month programme is a legitimate route rather than a failure to comply.

Scale matters here too. NICE records that about 1 in 10 women will need at least 1 surgical procedure for prolapse and that the re-operation rate is as high as 19%¹. In June 2019 NICE withdrew its recommendations on transvaginal mesh for recurrent anterior wall prolapse, and that withdrawal was what the June 2019 update to NG123 consisted of. The wider reason conservative care sits at the front of this pathway is the Cumberlege review of 2020, which stated that conservative measures must be offered to women before surgery, and noted in the same paragraph a concern that specialist pelvic floor physiotherapy cannot match the demand¹⁰.

For the treatment in full, see pelvic floor physiotherapy. For what a fair trial is and how you know it has ended, see when physiotherapy is not enough, and for the history behind the current surgical options, mesh and what changed after the inquiries.