A mesh implant is a thin, flexible sheet of material that surgeons place inside the body to reinforce weakened or damaged tissue. It works like a patch, providing structural support while your body heals around it. Mesh is most commonly used in hernia repairs and certain pelvic floor surgeries, and it remains one of the most widely used surgical devices in the world.
What Mesh Implants Are Made Of
Most mesh implants fall into two broad categories: synthetic and biologic. Synthetic mesh is typically made from woven or knitted plastic fibers and comes in either permanent or absorbable forms. Permanent (non-absorbable) mesh stays in the body indefinitely, providing long-term reinforcement at the repair site. It may break down slightly over time, but it’s designed to remain as a scaffold for the surrounding tissue. Absorbable synthetic mesh gradually dissolves, with some types fully resorbing within 12 to 18 months. The idea is that by the time the mesh disappears, your own tissue has grown strong enough to hold the repair on its own.
Biologic mesh is made from processed animal tissue, usually from pig intestine or cowhide. This tissue is sterilized and treated so it can safely be implanted in humans. Biologic meshes are absorbable and tend to be used in situations where infection risk is higher, since they integrate differently with the body than synthetic materials do.
How Mesh Works Inside the Body
Once a mesh implant is placed, your body treats it as a foreign object and launches an inflammatory response. Immune cells migrate to the area and begin depositing collagen, the protein that forms scar tissue, around and through the mesh fibers. Over weeks and months, this new tissue grows into the mesh’s pores, anchoring it in place and creating a reinforced layer of tissue that’s stronger than the original repair would have been alone.
This process doesn’t always go smoothly. In some cases, the body deposits too much collagen, creating excessive scarring that can cause the mesh to stiffen, shrink, or change shape. When mesh pores collapse under this pressure, it can trigger further inflammation and degrade the surrounding tissue. This excessive scarring is one of the key biological mechanisms behind mesh-related pain and complications.
Common Uses for Mesh Implants
Hernia repair is by far the most common application. A hernia occurs when an organ or tissue pushes through a weak spot in the surrounding muscle or connective tissue, and mesh provides a barrier that keeps the tissue from bulging through again. In randomized clinical trials, mesh repair cut the risk of hernia recurrence roughly in half compared to stitching the tissue closed without mesh, and it did so without increasing the risk of chronic pain. For this reason, mesh-based hernia repair has become the standard approach for most surgeons.
Mesh has also been used in pelvic floor surgeries, particularly for stress urinary incontinence (bladder leakage during coughing or exercise) and pelvic organ prolapse (when organs like the bladder or uterus drop from their normal position). Tension-free sling procedures for urinary incontinence have long-term success rates as high as 93%, and these mesh slings remain in common use. Transvaginal mesh for prolapse repair, however, has a very different track record.
The Transvaginal Mesh Ban
In April 2019, the FDA ordered all manufacturers of transvaginal mesh for pelvic organ prolapse to stop selling their products in the United States. The agency had reclassified these devices as high-risk in 2016 and required manufacturers to prove their safety and effectiveness through a formal approval process. None of the manufacturers were able to meet that standard. There are currently no FDA-approved mesh products for transvaginal prolapse repair on the U.S. market.
The problems with transvaginal prolapse mesh were significant. Mesh erosion, where the material wears through surrounding tissue and becomes exposed, occurred in about 8% of patients within one to three years. In longer follow-up studies, erosion rates climbed as high as 42%. These complications often required additional surgery to remove the mesh. By contrast, mesh slings used for urinary incontinence carry a much lower complication rate of around 4%, which is why they remain available.
If you currently have transvaginal mesh in place, there’s no blanket recommendation to have it removed if you aren’t experiencing problems. Routine follow-up care is important, and symptoms like persistent vaginal bleeding, pelvic or groin pain, or pain during sex should be reported to your doctor.
Possible Complications
Mesh complications vary depending on where the implant is placed and what type of mesh is used. The most commonly reported problems include chronic pain, infection, and mesh erosion or exposure.
- Infection: Occurs in less than 1% of transvaginal mesh procedures, though some studies report rates as high as 8%. When meshes are surgically removed due to complications, roughly 77% show positive bacterial cultures, suggesting that low-grade infection may play a larger role than previously recognized.
- Erosion: The mesh gradually wears through surrounding tissue. For abdominal procedures like sacrocolpopexy, erosion rates reach about 6% by two years and 10% by seven years.
- Pain: Excessive scar tissue formation can cause the mesh to contract or stiffen, leading to chronic discomfort. Some patients require mesh removal for pain that doesn’t respond to other treatments.
Across all types of synthetic mesh repair, roughly 4.5% to 12% of patients eventually need additional surgery for mesh-related complications, and 4% to 12% require full removal of the mesh due to infection. Absorbable meshes may reduce some of these long-term risks. Studies of biosynthetic mesh show that most complications occur in the first year, with very few mesh-related problems after the two-year mark when the material has fully dissolved.
What Recovery Looks Like
Recovery depends on the type of procedure, but general guidelines are fairly consistent. After a pelvic mesh procedure, you’ll typically be restricted from lifting more than 10 pounds for the first two weeks, increasing to 20 pounds until the six-week mark. Pelvic rest, meaning nothing inserted into the vagina including tampons, is standard for up to six weeks. Some vaginal spotting and discharge during this period is normal.
Most people can drive within 24 to 48 hours after surgery, as long as they aren’t taking pain medication. Returning to a desk job usually happens within two weeks, though physically demanding work takes longer. Full activity restrictions generally lift around six weeks, which is when the mesh has had enough time to anchor securely into the surrounding tissue.
Hernia mesh recovery follows a similar pattern of gradual return to activity, with heavy lifting restrictions lasting several weeks. Your surgeon will set specific limits based on the size and location of the repair.