Posterior Vaginal Wall Prolapse Repair and Repair of Perineum

Posterior Vaginal
Wall Prolapse Repair
And Repair of Perineum

Patient Information Leaflet


BSUG Patient Information Sheet Disclaimer

This patient information sheet was put together by members of the BSUG  Governance Committee paying particular reference to any relevant NICE Guidance. It is a resource for you to edit to yours and your trusts particular needs. Some may choose to use the document as it stands, others may choose to edit or use part of it. The BSUGs Governance Committee and the Executive Committee cannot be held responsible for errors or any consequences arising from the use of the information contained in it. The placing of this information sheet on the BSUGs website does not constitute an endorsement by BSUGs. 

We will endeavour to update the information sheets at least every two years.

Posterior Vaginal Wall Prolapse


About this booklet
What is a Posterior Vaginal Wall Prolapse
Alternatives to surgery
General surgical risks
Specific risks of this surgery
Posterior Vaginal Wall Prolapse repair

Before the operation
How is the operation performed
After the operation.
Avoiding constipation

Useful References
Any questions – write them here ‘Things I need to know before I
have my operation’
Describe your expectations from surgery

About this leaflet

We advise you to take your time to read this leaflet, any questions you have please write them down on the sheet provided (towards the back) and we can discuss them with you at our next meeting. It is your right to know about the operations being proposed, why they are being proposed, what alternatives there are and what the risks are. These should be covered in this leaflet.

This leaflet firstly describes what an Posterior Vaginal Wall Prolapse is, it then goes on to describe what alternatives are available within our trust, the risks involved in surgery and finally what operation we can offer.

What is a Posterior Vaginal Wall Prolapse

  • Posterior means towards the back, so a Posterior Vaginal Wall Prolapse is a prolapse of the back wall of the vagina.
  • Posterior Vaginal Wall Prolapse is called a Rectocele which describes the structure bulging into the vagina – the rectum (see diagram below).
  • The pelvic floor muscles form a sling or hammock across the opening of the pelvis. These muscles, together with their surrounding tissue are responsible for keeping all of the pelvic organs (bladder, uterus, vagina, and rectum) in place and functioning correctly.
  • Prolapse occurs when the pelvic floor muscles, their attachments or the vagina have become weak. This usually occurs because of the damage of childbirth but is most noticeable after the menopause when the quality of supporting tissue deteriorates.
  • With straining, for example on passing a motion, the weakness described above allows the rectum (back passage) to bulge into the vagina and sometimes bulge out of the vagina (Rectocele).
  • A large Rectocele may make it very hard to have a bowel movement especially if you have constipation.
  • Some women have to push the bulge back into the vagina or support the perineal area (the area between the anus and the vagina) with their fingers in order to complete a bowel movement. Some women have to insert a finger in the back passage to facilitate evacuation of their bowel, this is called digitation.
  • If a woman has difficulty in emptying the back passage or has to use her fingers to achieve bowel emptying, a special x-ray test to assess bowel emptying may be needed in planning the surgical approach. The X-ray will involve inserting a special paste in the back passage and taking Xrays while trying to evacuate the paste from the back passage.
  • Some women find that the bulge causes a dragging or aching sensation.

Alternatives to surgery

  • Do nothing – if the prolapse (bulge) is not distressing then treatment is not necessarily needed. If, however, the prolapse permanently protrudes through the opening to the vagina and is exposed to the air, it may become dried out and eventually ulcerate. Even if it is not causing symptoms in this situation it is probably best to push it back with a ring pessary (see below) or have an operation to repair it. 
  • Pelvic floor exercises (PFE). The pelvic floor muscle runs from the coccyx at the back to the pubic bone at the front and off to the sides.
    This muscle supports your pelvic organs (uterus, vagina, bladder and rectum). Any muscle in the body needs exercise to keep it strong so that it functions properly. This is more important if that muscle has been damaged. PFE can strengthen the pelvic floor and therefore give more support to the pelvic organs. These exercises may not get rid of the prolapse but they make you more comfortable. PFE are best taught by an expert who is usually a Physiotherapist. These exercises have no risk and even if surgery is required at a later date
    , they will help your overall
    chance of being more comfortable.

Types of Pessary

  • Ring pessarythis is a soft plastic ring or device which is inserted into the vagina and pushes the prolapse back up. This usually gets rid of the dragging sensation and can improve urinary and bowel symptoms. It needs to be changed every 6-9 months and can be very popular; we can show you an example in clinic. Other pessaries may be used if the Ring pessary is not suitable. Some couples feel that the pessary gets in the way during sexual intercourse, but many couples are not bothered by it. 
  • Shelf Pessary or Gellhorn – If you are not sexually active this is a  stronger pessary which can be inserted into the vagina and again needs changing every 6 months.

General Risks of Surgery

  • Anaesthetic risk. This is very small unless you have specific medical problems. This will be discussed with you.
  • Haemorrhage. There is a risk of bleeding with any operation. The risk from blood loss is reduced by knowing your blood group beforehand and then having blood available to give you if needed. It is rare that we have to transfuse patients after their operation.
  • Infection. There is a risk of infection at any of the wound sites. A significant infection is rare. The risk of infection is reduced by our policy of routinely giving antibiotics with major surgery.
  • Deep Vein Thrombosis (DVT). This is a clot in the deep veins of the leg. The overall risk is at most 4-5% although the majority of these are without symptoms. Occasionally this clot can migrate to the lungs which can be very serious and in rare circumstances it can be fatal (less than 1% of those who get a clot). DVT can occur more often with major operations around the pelvis and the risk increases with obesity, gross varicose veins, infection, immobility and other medical problems. The risk is significantly reduced by using special stockings and injections to thin the blood(heparin).

Specific Risks of This Surgery

  • Damage to local organs. This can include bowel and blood vessels. This is a rare complication but requires that the damaged organ is repaired and this can result in a delay in recovery. It is sometimes not detected at the time of surgery and therefore may require a return to theatre. If the rectum (back passage) is inadvertently damaged at the time of surgery, temporary colostomy (bag) may be required but this is exceptionally rare.
  • Prolapse recurrence: If you have one prolapse, the risk of having another prolapse sometime during your life is 30%. This is because the vaginal tissue is weak.
  • Pain: General pelvic discomfort, this usually settles with time but occasionally pain on intercourse may occur and can sometimes be permanent.
  • Reduced sensation during intercourse: Sometimes the sensation during intercourse may be less and occasionally the orgasm may be less intense.
  • Change in bowel function: Occasionally patients can become constipated after the operation but often bowel function is improved.

Posterior Vaginal Wall Prolapse Repair

Following the operation you are likely to feel more comfortable. Intercourse may be more satisfactory. Opening your bowels may be easier, but this can not be guaranteed.

Before the operation

It is recommended that you take a medication to soften your motions for at least three days before the operation. This will help to reduce the risk of you getting constipated after the operation and could mean you get home earlier. Magnesium sulphate, Lactulose or Movicol would be suitable and you can obtain these from your General Practitioner. If you are post-menopausal your Gynaecologist may recommend local oestrogen cream.

How the operation is performed

  • The operation can be done with a spinal or general anaesthetic. You may have a choice of which anaesthetic is used.
    • A spinal anaesthetic involves an injection in the lower back, similar to what we use when women are in labour or for a caesarean section. The spinal anaesthetic numbs you from the waist down. This removes any sharp sensation but a pressure sensation will still be felt.
    • A general anaesthetic will mean you will be asleep (unconscious) during the entire procedure.
  • The legs are placed in stirrups (supported in the air).
  • The back vaginal wall is infiltrated with local anaesthetic.
  • A horizontal cut is made where the back wall of the vagina meets the skin just outside the vagina.
  • A vertical cut is then made in the back wall of the vagina, over the area of the bulge – Figures 1 & 2.
  • The vaginal skin is then separated from the rectum (lower bowel).
  • Two or three stitches are placed in tissue at either side of the rectum.
  • These stitches are then tied in the centre thus bringing the tissue into the  middle so that the rectum is held behind them and thus supported. This then stops the rectum bulging into the back vaginal wall – Figure 3.
  • Sometimes a Perineorrhaphy, which is a surgical repair of the perineum (the skin and muscle between the front and back passage), will be performed. This can improve the prolapse repair but can result in tightening of the vaginal entrance and pain during sexual intercourse.
  • Any excess vaginal skin is trimmed and then the vaginal skin closed with stitches – Figure 4.
  • A vaginal pack (ribbon gauze to apply pressure) may then be inserted into the vagina which is removed the following morning. A catheter may also left in the bladder overnight.

After the operation – in hospital

  • On return from the operating theatre you will have a fine tube (drip) in one of your arm veins with fluid running through to stop you getting dehydrated.
  • You may have a bandage in the vagina, called a ‘pack’ and a sanitary pad in place. This is to apply pressure to the wound to stop it oozing.
  • You may have a tube (catheter) draining the bladder overnight. The catheter may give you the sensation as though you need to pass urine but this is not the case.
  • Usually the drip, pack and catheter come out the morning after surgery or sometimes later the same day. This is not generally painful.
  • The day after the operation you will be encouraged to get out of bed and take short walks around the ward. This improves general wellbeing and reduces the risk of clots on the legs.
  •  It is important that the amount of urine is measured the first couple of times you pass urine after the removal of the catheter. An ultrasound scan for your bladder may be done on the ward to make sure that you are emptying your bladder properly. If you are leaving a significant amount of urine in your bladder, you may have to have the catheter reinserted into your bladder for a couple of days more.
  • You may be given injections to keep your blood thin and reduce the risk of blood clots normally once a day until you go home or longer in some cases.
  • The wound is not normally very painful but sometimes you may require tablets or injections for pain relief.
  • There will be slight vaginal bleeding like the end of a period after the operation. This may last for a few weeks.
  • The nurses will advise you about sick notes, certificates etc. You are usually in hospital for up to 4 days.


After the operation – at home:

  • Mobilization is very important; using your leg muscles will reduce the risk of clots in the back of the legs (DVT), which can be very dangerous.
  • You are likely to feel tired and may need to rest in the daytime from time to time for a month or more, this will gradually improve.
  • It is important to avoid stretching the repair particularly in the first weeks after surgery. Therefore, avoid constipation and heavy lifting. The deep stitches dissolve during the first three months and the body will gradually lay down strong scar tissue over a few months.
    • Avoiding constipation
      o Drink plenty of water / juice
      o Eat fruit and green vegetables esp broccoli
      o Plenty of roughage e.g. bran / oats
  • Do not use tampons for 6 weeks.
  • There are stitches in the skin wound in the vagina. The stitches under the skin will dissolve by themselves. The surface knots of the stitches may appear on your underwear or pads after about two weeks, this is quite normal. There may be little bleeding again after about two weeks when the surface knots fall off, this is nothing to worry about. 
  • At six weeks gradually build up your level of activity. 
  • After 3 months, you should be able to return completely to your usual level of activity.
  • You should be able to return to a light job after about six weeks. Leave a very heavy or busy job until 12 weeks.
  • You can drive as soon as you can make an emergency stop without discomfort, generally after three weeks, but you must check this with your insurance company, as some of them insist that you should wait for six weeks.