A Retrospective Study on the Long-Term Efficacy of an Innovative Locking-Type Reinforcement Technique for Pelvic Organ Prolapse with Stress Urinary Incontinence

For many women, the muscles and tissues that hold the bladder, uterus, and rectum in place can weaken over time, much like the elastic bands in an old pair of underwear losing their stretch. When this support fails, organs can sag into the vaginal canal, a condition known as pelvic organ prolapse. Often, this sagging happens alongside stress urinary incontinence, where a cough, sneeze, or laugh causes a leak because the urethra cannot stay closed under pressure. These issues are not just physical inconveniences; they can deeply affect a woman's ability to exercise, socialize, and feel comfortable in her own body. For decades, surgeons have tried to fix these problems by stitching tissues back together or using synthetic mesh to act as a hammock. However, traditional methods sometimes fail to address the root cause: the entire foundation of the pelvic floor has shifted, and simply patching one spot often leaves the rest of the structure unstable.

A team of researchers in China recently set out to test a more comprehensive approach. They studied a new surgical technique they call "locking-type reinforcement," which aims to rebuild the entire support system rather than just fixing the visible damage. The study, which followed over a thousand women for five years, compared this new method against standard surgery. The results suggest that by tightening the muscles at the bottom of the pelvis and reinforcing the front wall simultaneously, surgeons can create a much more durable repair that restores function and reduces the chance of the problem returning.

The researchers looked at 1,155 women who had severe prolapse of the front vaginal wall along with stress incontinence. They divided these patients into two groups to see which treatment worked better over the long term. The first group, consisting of 526 women, received the standard treatment: a repair of the front vaginal wall combined with a mid-urethral sling, which is a small strip of mesh placed under the urethra to stop leaks. The second group, made up of 629 women, received that same standard treatment plus an additional step called perineoplasty. This extra step involved reconstructing the perineal body, the area of muscle and tissue between the vagina and the anus, and tightening the levator ani muscles, which form the main floor of the pelvis. The surgeons described this combined approach as a "locking" mechanism because it secures the front, middle, and back of the pelvic floor together, creating a stable, unified structure rather than isolated patches.

The surgery for the second group took slightly longer, averaging about 94 minutes compared to 73 minutes for the first group, and involved a bit more blood loss, but the differences were minor. The real story emerged in the years that followed. Five years after the operation, every single woman in the group that received the extra "locking" repair had achieved a POP-Q stage of I or lower, indicating a near-normal anatomical position with only very mild or no signs of sagging. In contrast, while the standard group improved, they did not see the same level of success in the back part of the vaginal wall, and a small number of patients in that group experienced a return of the prolapse. Specifically, only about 1 percent of the women in the new technique group had a recurrence of their prolapse after five years, compared to roughly 3 percent in the standard group.

Beyond just the physical position of the organs, the women who received the full "locking" repair reported feeling significantly better in their daily lives. They scored much lower on questionnaires measuring distress and the impact of symptoms on their daily activities, indicating that their pain and discomfort had largely vanished. Perhaps most notably, the study found that sexual function improved more in the group with the extra repair. Women in this group reported higher satisfaction with their sex lives and their partners reported greater satisfaction as well. This was likely because the new technique preserved the natural length and sensitivity of the vaginal canal, whereas older methods sometimes shortened the canal or caused pain during intercourse.

Safety was a major concern for the researchers, particularly regarding the use of mesh, which has historically been associated with complications like erosion or infection. In this study, the rate of mesh complications was extremely low for both groups, but slightly lower for the new technique. Only about 0.8 percent of the women in the "locking" group experienced mesh exposure or erosion over five years, a rate that remained stable and low. The risk of new urinary problems or chronic pain was also minimal. The data suggests that by reinforcing the natural muscle layers and using the mesh in a way that distributes pressure evenly, the surgeons were able to avoid the common pitfalls of previous mesh surgeries.

The study concludes that this innovative "locking-type" technique offers a safe and effective way to treat complex pelvic floor problems. By addressing the entire pelvic floor as a single, interconnected unit, the surgery provides a stronger, longer-lasting fix than traditional methods. While the study was conducted at a single hospital and involved a specific patient population, the five-year follow-up provides strong evidence that rebuilding the pelvic foundation from the bottom up can restore both anatomy and quality of life for women suffering from these debilitating conditions. The findings suggest that for women with severe prolapse and incontinence, a comprehensive repair that includes the perineal muscles may be the key to a permanent solution.