The vaginal vault is the closed upper end of the vagina that exists after a hysterectomy. Before the uterus is removed, this area is simply the deepest part of the vaginal canal, where the cervix protrudes and small recesses called fornices surround it. Once the cervix and uterus are gone, surgeons close the top of the vagina with sutures, creating a “vault” or cuff. Because it relies on surrounding ligaments and tissue for structural support, this area is vulnerable to a range of problems, from infection and bleeding in the weeks after surgery to long-term complications like prolapse, where the vault drops downward.
Where Exactly Is It, and What Holds It Up
The vaginal vault corresponds to roughly the top 2.5 centimeters of the vagina, measured from the apex downward. Before hysterectomy, this zone includes four fornices: one in front of the cervix (anterior), one behind it (posterior), and one on each side (lateral). A pair of ligament complexes, the uterosacral and cardinal ligaments, anchors the cervix and upper vagina to the bony pelvis. These two ligament groups fuse together near the cervix into a combined structure about 2 to 3 centimeters long.1PubMed Central. Surgical anatomy of the vaginal vault
When surgeons remove the uterus and cervix, they cut through these ligaments. After closure, some residual uterosacral ligament support remains at the front of the vault, but the back of the vault loses its ligamentous anchor almost entirely. That asymmetry matters: the posterior vault is the spot most likely to give way over time.1PubMed Central. Surgical anatomy of the vaginal vault
Vaginal Vault Prolapse
Vault prolapse is the condition people worry about most. The closed top of the vagina descends, sometimes partway down the vaginal canal, sometimes all the way to or beyond the opening. The reported frequency depends on who is doing the looking and how they define it. In one long-term follow-up of over 2,600 women after hysterectomy, only about 0.4% came back seeking surgical repair on their own. But when researchers actually examined a subset of those women, they found vault prolapse in 4.4%. Among women whose original hysterectomy had been performed specifically for pelvic organ prolapse, the rate jumped to 11.6%, compared with 1.8% in women who had hysterectomies for other reasons.2PubMed. True incidence of vaginal vault prolapse. Thirteen years of experience
A separate study with up to 17 years of follow-up confirmed that pattern. Prolapse as the original reason for hysterectomy was the strongest predictor of recurrence, regardless of whether the surgery was done vaginally, laparoscopically, or through an open incision.3American Journal of Obstetrics & Gynecology. Long-term incidence of prolapse after hysterectomy In other words, the surgical route itself is less important than the underlying health of the pelvic floor before surgery. The most important single risk factor for vault prolapse is a pre-existing pelvic floor defect before the hysterectomy takes place.4PubMed Central. Vaginal vault prolapse Beyond that, obesity, menopause, having had multiple pregnancies, and a history of vaginal deliveries all raise the odds.5PubMed. Surgical approaches to prevent vaginal vault prolapse after hysterectomy, and risk factors for vaginal vault prolapse
Symptoms range from a dragging or heavy sensation in the pelvis to actually feeling or seeing tissue bulging at the vaginal opening. Because the vault sits near the bladder, rectum, and bowel, its descent frequently brings urinary problems, difficulty with bowel movements, and sexual dysfunction along with it.4PubMed Central. Vaginal vault prolapse
Early Complications After Hysterectomy
Before prolapse has a chance to develop, the vault can run into trouble in the first days or weeks after surgery. Two of the most common early problems are hematomas (blood collecting at the vault) and cellulitis (infection of the surgical cuff).
Vault hematomas develop when blood pools at the closed top of the vagina, usually because of incomplete control of bleeding during surgery or a post-operative infection. Small collections often resolve on their own, but larger or infected ones may need drainage and antibiotics. Vault cellulitis happens when bacteria colonize the surgical site, causing pelvic pain and fever; it is typically treated with broad-spectrum antibiotics.6PubMed Central. Unveiling the uncommon: vault hematoma and vault cellulitis following hysterectomy – a comprehensive narrative review In a study of 650 hysterectomies, pelvic hematomas showed up on imaging in about 8% of cases. Roughly 2% of all patients had hematomas that became infected and required readmission. Women who had vaginal surgery were more likely to develop an infected hematoma than those who had open abdominal or laparoscopic procedures.7PubMed Central. Symptomatic pelvic hematoma following hysterectomy: risk factors, bacterial pathogens and clinical outcome
A rarer but more alarming complication is vaginal cuff dehiscence, where the closed top of the vagina partially or completely separates. In a large series of nearly 2,400 hysterectomies, roughly 1% were later diagnosed with dehiscence. Laparoscopic and robotic approaches carried substantially higher odds of dehiscence than open surgery. Continuous suturing of the cuff, rather than interrupted stitches, appeared to be protective. Women who experienced dehiscence also had a higher rate of other major complications.8PubMed Central. Vaginal cuff dehiscence: risk factors and associated morbidities When the vault separates, bowel can potentially push through the opening, which is a surgical emergency.
Enterocele and Fistula
The vault can also develop structural defects that are distinct from straightforward prolapse. An enterocele is a hernia in which a loop of small bowel pushes into a gap in the connective tissue lining the pelvis, usually bulging into the upper back wall of the vagina.9PubMed Central. Enterocele Presenting as Anterior Rectal Prolapse: Resolution with Vaginal Repair This is especially likely after hysterectomy because the space where the uterus used to sit is now empty, and if the supporting tissue is weak, the intestine fills the void.
Vesicovaginal fistula is a different kind of problem: an abnormal connection forms between the bladder and the vagina, causing continuous urinary leakage. Fistulas can result from surgical injury to the bladder wall during hysterectomy, from radiation, or from obstructed labor. Diagnosis is typically straightforward when a woman reports constant uncontrollable wetness; dye testing can confirm the tract. Surgery is the main treatment, though fistulas can recur.10PubMed Central. Vesicovaginal fistula: diagnosis and management
Non-Surgical Management of Vault Prolapse
Not everyone with vault prolapse needs or wants an operation. Two non-surgical approaches have solid evidence behind them: pessaries and pelvic floor muscle training.
Pessaries
A pessary is a removable device, usually silicone, that sits inside the vagina and mechanically holds the vault in place. Fitting one is a bit of trial and error. One study found that clinicians tried an average of about two different pessaries per patient before landing on the right fit, and roughly 73% of women were using their pessary successfully at four weeks.11PubMed. Pessary evaluation for genital prolapse treatment: From acceptance to successful fitting Success rates vary depending on the problem being managed. Ring pessaries and ring-with-support types tend to have the best fitting outcomes. Postmenopausal women using hormone therapy, both systemic and topical, had the highest success rate at 78%.12PubMed. Vaginal pessaries in managing women with pelvic organ prolapse and urinary incontinence: patient characteristics and factors contributing to success
There are some practical drawbacks. Women with a history of hysterectomy or prior prolapse surgery are less likely to be fitted successfully.13PubMed. Factors which influence the short-term success of pessary management of pelvic organ prolapse A shorter vaginal length and higher body mass index also make fitting harder.11PubMed. Pessary evaluation for genital prolapse treatment: From acceptance to successful fitting Still, for women who get a good fit, a pessary can relieve symptoms for years without surgery.
Pelvic Floor Muscle Training
Structured pelvic floor exercises, sometimes called Kegel programs, can reduce prolapse symptoms. In one randomized trial, 45% of women who underwent supervised pelvic floor training had an improved prolapse stage, compared with 0% in the control group, and most women in the training group reported their prolapse felt better.14PubMed. A randomized controlled trial of pelvic floor muscle training for stages I and II pelvic organ prolapse A larger multicenter trial found that the benefit persisted out to at least two years, with women who trained reporting fewer and milder prolapse symptoms than those who did not.15The Lancet. Individualised pelvic floor muscle training in women with pelvic organ prolapse (POPPY): a multicentre randomised controlled trial The improvements are real but modest. Pelvic floor training is best suited for early-stage prolapse and as a complement to other treatments rather than a cure for severe descent.
Surgical Repair Options
When vault prolapse is severe enough to impair daily life and non-surgical options are not cutting it, surgery becomes the conversation. The choices broadly split into procedures that use synthetic mesh and those that rely on the body’s own tissues.
Sacrocolpopexy is widely considered the gold standard. In this procedure, a strip of mesh bridges the vault to the front of the sacrum (the bone at the base of the spine), effectively suspending the vagina from above. It can be done through an open incision or laparoscopically. A randomized trial comparing the two access routes found similar anatomical outcomes at one year, but the laparoscopic approach involved less blood loss and a shorter hospital stay.16PubMed. A randomised controlled trial of abdominal versus laparoscopic sacrocolpopexy for the treatment of post-hysterectomy vaginal vault prolapse: LAS study Sacrocolpopexy is praised for its durability and high patient satisfaction, and the laparoscopic version has become the preferred approach for most surgeons.17PubMed Central. Sacrocolpopexy: The Way I Do It
A 2024 randomized trial comparing three approaches head-to-head (sacrocolpopexy, transvaginal mesh, and native tissue repair without mesh) found that sacrocolpopexy was superior to native tissue repair, with a 28% failure rate at three years versus 43%. Transvaginal mesh fell between the two at 29%. Mesh exposure rates were low for both mesh-based procedures.18PubMed Central. Apical Suspension Repair for Vaginal Vault Prolapse: A Randomized Clinical Trial Native tissue repairs avoid the risks associated with mesh entirely, and some techniques hold up well over time: uterosacral ligament suspension showed about a 19% objective recurrence rate at ten years, but only 6% of women reported bothersome recurrence, and just 2% needed a second surgery.19PubMed Central. Native-tissue prolapse repair: Efficacy and adverse effects of uterosacral ligaments suspension at 10-year follow up
Other native tissue options exist. Sacrospinous ligament fixation stitches the vault to a strong ligament inside the pelvis, typically on one side. Various approaches such as iliococcygeus fascia fixation and levator myorrhaphy attach the vault to different pelvic muscles or their surrounding connective tissue.20PubMed. Transvaginal native-tissue repair of vaginal vault prolapse These are most often performed entirely through the vagina, which avoids abdominal incisions.
The Mesh Debate
Synthetic mesh in pelvic surgery has been the subject of intense scrutiny and regulation over the past two decades. When mesh is used for vault suspension via sacrocolpopexy, erosion or exposure rates generally run low, with one systematic review placing the range at 0% to 12% depending on follow-up length.21PubMed. Systematic review of the efficacy and safety of using mesh in surgery for uterine or vaginal vault prolapse When mesh does erode through the vaginal wall, symptoms can include unusual discharge, pain during intercourse (sometimes reported by the partner as well), urinary tract infections, and new-onset incontinence.22PubMed Central. Complications of grafts used in female pelvic floor reconstruction: Mesh erosion and extrusion The risk is higher when mesh is used in the posterior compartment (the back wall of the vagina).23PubMed Central. Mesh complications in female pelvic floor reconstructive surgery and their management: A systematic review
It is worth separating two distinct uses: mesh placed abdominally during sacrocolpopexy has a much better safety profile than transvaginal mesh kits, which regulatory agencies in several countries have restricted or banned. The current consensus favors sacrocolpopexy mesh but treats transvaginal mesh with caution. Experts also advise against combining sacrocolpopexy with a total hysterectomy in the same session because the fresh surgical site at the vault increases the chance of mesh exposure down the line.17PubMed Central. Sacrocolpopexy: The Way I Do It
Sex After Vault Surgery
Sexual function is a major concern for women considering prolapse repair, and the honest answer is that outcomes are mixed. In one study, the most bothersome barrier to sex shifted after surgery: before repair it was vaginal bulging, while afterward it was vaginal pain, with about a quarter of participants reporting pain as a significant issue.24PubMed. Sexual function after vaginal surgery for pelvic organ prolapse and urinary incontinence A study of sacrospinous fixation found that sexual function was generally rated as good across multiple domains, including desire, lubrication, orgasm, and satisfaction. De novo pain during sex occurred in a small number of women and resolved in most after the offending stitch was removed.25PubMed. Sexual function after sacrospinous fixation for vaginal vault prolapse: bad or mad?
A qualitative study of women’s experiences after pelvic reconstructive surgery captured the emotional complexity that numbers alone miss. Many women described fear that sex might damage the repair. Some found their experience essentially unchanged, while others needed new positions or extra lubrication. On the positive side, some women reported an increase in desire, pleasure, and even improved orgasm.26PubMed. Women’s Experience of Their First Sexual Encounter After Pelvic Reconstructive Surgery The takeaway is that surgery does not guarantee improvement or deterioration in sexual function. It changes the anatomy, and each person adapts differently.
Why Estrogen Matters for the Vault
The connective tissue that holds the vault in place is sensitive to estrogen. After menopause, estrogen levels drop and the tissue thins, becomes less elastic, and is more prone to breakdown. This is one reason vault prolapse often worsens in the years following menopause. Local estrogen therapy, applied directly to the vaginal tissue as a cream or insert, appears to slow this process. Research has shown that topical estrogen helps limit the degradation of the structural framework of vaginal tissue and activates local immune responses that support tissue maintenance.27PubMed Central. Local oestrogen therapy modulates extracellular matrix and immune response in the vaginal tissue of post-menopausal women with severe pelvic organ prolapse Clinicians frequently prescribe vaginal estrogen alongside pessary use, since it can improve tissue health enough to make fitting easier and reduce irritation.
Detection and Imaging
Vault prolapse is usually diagnosed through a standard pelvic exam, sometimes with the patient bearing down to make the descent visible. Imaging is not always needed, but when the clinical picture is unclear or surgery is being planned, ultrasound can detect vault descent and loss of apical support.28Kachestvennaya Klinicheskaya Praktika = Good Clinical Practice. Modern ultrasound imaging of pelvic floor dysfunction: clinical applications and capabilities MRI is sometimes used for complex cases to map out which compartments are affected and to identify enteroceles or other defects that might not be obvious on physical exam.
An Evolutionary Vulnerability
Pelvic organ prolapse is sometimes described as a uniquely human problem, and there is a grain of truth in that. The shift to upright walking millions of years ago repositioned the pelvic floor from a vertical wall to a horizontal platform bearing the weight of the abdominal organs above it. The ligaments and muscles that support the vaginal vault evolved originally for locomotion, not for holding organs in place against gravity. That repurposing left structural compromises that other mammals largely avoid.29PubMed. Evolution of the female pelvis and relationships to pelvic organ prolapse
Interestingly, researchers studying this question have identified a primate whose pelvic floor closely resembles the human one: the squirrel monkey. Its levator ani muscles and connective tissue condensations are strikingly similar to human structures, and it faces comparable challenges during birth due to the tight fit between fetal head and pelvic outlet.30Continence Reports. Bipedalism and pelvic floor disorders, an evolutionary medical approach The squirrel monkey model has been used in research to understand how birth-related injury to the pelvic floor contributes to prolapse, offering insights that are difficult to study directly in humans.
When No Vaginal Vault Exists Naturally
The term “vaginal vault” typically assumes a vagina existed in the first place. But in some congenital conditions, the vagina, cervix, or uterus does not develop normally. In Mayer-Rokitansky-Küster-Hauser syndrome, the vagina and uterus are absent or severely underdeveloped despite normal external appearance. Creating a functional vagina, known as a neovagina, can be done through non-surgical self-dilation or through surgical procedures using skin grafts or intestinal tissue.31PubMed. Neovagina creation methods and their potential impact on subsequent uterus transplantation: a review The “vault” of a neovagina does not have the same ligamentous architecture as one left after hysterectomy, so its long-term support and complication profile differ. Increasingly, the method used to create a neovagina is being evaluated with an eye toward future possibilities like uterus transplantation, adding another layer of consideration to the choice.