A bladder sling is a small strip of material, about one centimeter wide, that a surgeon places beneath the urethra to support it and prevent urine from leaking during physical activities like coughing, sneezing, or exercise. It’s the most common surgical treatment for stress urinary incontinence (SUI) in women, and the procedure typically takes less than 30 minutes.
How a Bladder Sling Works
Stress urinary incontinence happens when the muscles and tissues that support the urethra weaken, allowing urine to escape when there’s sudden pressure on the bladder. A bladder sling acts like a hammock underneath the urethra, restoring the support that weakened tissue can no longer provide. The sling is placed between the middle portion of the urethra and the vaginal wall through a small incision.
Most slings are made from polypropylene mesh, a woven synthetic material with tiny holes throughout the weave. Over time, your body’s connective tissue grows through those holes, anchoring the sling in place permanently. This integration is what makes the procedure a long-term fix rather than a temporary one.
Types of Bladder Slings
There are several variations, but the main distinction is in how the sling is routed through the body and what it’s made from.
Retropubic (TVT)
The tension-free vaginal tape approach threads the sling upward behind the pubic bone. It tends to have higher success rates, particularly in women who have had prior pelvic surgery. In one study comparing the two main approaches in women with recurrent incontinence after previous vaginal mesh surgery, the retropubic method achieved an 88% success rate compared to 60% for the alternative.
Transobturator (TOT)
This approach routes the sling through the inner thigh area rather than behind the pubic bone. It generally involves a shorter operating time and hospital stay. However, it has been associated with higher rates of repeat surgery for recurrent leaking in certain populations.
Mini-Slings
A newer, shorter version of the midurethral sling that requires a single small incision. The FDA has reviewed data showing that mini-slings perform comparably to traditional midurethral slings in both effectiveness and complication rates through at least five years of follow-up.
Autologous (Biological Tissue) Slings
Instead of synthetic mesh, some slings are made from a strip of your own tissue, usually harvested from the abdominal wall. A large meta-analysis found that synthetic and biological slings have comparable overall success rates, though synthetic slings generally show better operative outcomes and fewer complications. Biological slings are often preferred for women who want to avoid mesh entirely or who have risk factors that make mesh less suitable.
Who Is a Good Candidate
The typical candidate is a woman with stress incontinence (or stress-predominant mixed incontinence) who hasn’t had prior surgery for the condition and has finished having children. The American Urological Association recommends postponing sling placement until childbearing is complete, since pregnancy and delivery can affect the repair.
Several conditions make mesh slings riskier or less appropriate. Women who have had pelvic radiation, significant scarring from prior vaginal surgery, or severe tissue thinning face a higher chance of complications with synthetic mesh. Autoimmune conditions like lupus or Sjögren’s disease, long-term steroid use, and immune suppression can all impair healing around the mesh. Women with diabetes should know they carry a higher risk of mesh erosion and may see somewhat reduced effectiveness compared to non-diabetic patients.
Mesh slings are also not placed during certain combined procedures, such as repair of a urethral diverticulum or a urethrovaginal fistula.
What Happens During Surgery
The procedure is minimally invasive and usually completed in under 30 minutes. A small incision is made in the vaginal wall, and one or two tiny incisions are made in the skin of the lower abdomen or inner thigh, depending on the approach. The surgeon threads the sling into position beneath the urethra, adjusts the tension so it supports without compressing, and closes the incisions. Most women go home the same day.
Recovery and Getting Back to Normal
Standard post-operative instructions include avoiding lifting more than 20 pounds, high-impact activity, and strenuous exercise during the initial recovery window. Most women can expect some soreness and mild discomfort for the first week or two.
How long you need to limit activity has been a point of debate. A randomized controlled trial found that women who returned to normal activities at three weeks reported significantly higher satisfaction at six months compared to those restricted for six weeks, with no difference in surgical outcomes. That suggests a shorter restriction period works well for most people without compromising the repair.
Risks and Complications
Like any surgery, bladder slings carry risks. The most discussed is mesh erosion, where a small portion of the synthetic material works its way through the vaginal wall. This can cause pain, discharge, or discomfort during intercourse. It’s more common in women with poor tissue quality, diabetes, or impaired healing.
Other possible complications include urinary retention (difficulty emptying the bladder fully), urgency or overactive bladder symptoms that weren’t present before surgery, infection, and pain in the groin or thigh, particularly with the transobturator approach. In some cases, the sling may need to be loosened, adjusted, or removed.
It’s worth noting that the FDA distinguishes between mesh used for stress incontinence and mesh used for pelvic organ prolapse. Mesh for prolapse repair was ordered off the U.S. market in 2019 due to safety concerns, but midurethral slings for incontinence remain available and continue to be monitored by the FDA for safety and effectiveness.
Synthetic Mesh vs. Your Own Tissue
The choice between a synthetic sling and one made from your own tissue depends on your medical history and risk factors. Synthetic slings offer a shorter, less invasive procedure since there’s no need to harvest tissue from another site. They also tend to have slightly better operative outcomes overall. Autologous slings involve a longer surgery and an additional incision at the tissue donor site, but they eliminate mesh-related risks entirely.
For women undergoing a first-time procedure with no special risk factors, synthetic midurethral slings remain the standard recommendation. For women with conditions that impair wound healing, prior mesh complications, or a strong preference to avoid synthetic material, a biological tissue sling is a well-supported alternative with comparable long-term continence rates.