Mesh surgery is a procedure that uses a sheet of flexible material, similar to a net or screen, to reinforce weakened tissue inside the body. It is most commonly used to repair hernias and treat pelvic floor conditions like stress urinary incontinence. The mesh acts as a permanent or temporary scaffold that your body’s own tissue grows into over time, creating a stronger repair than stitches alone can provide.
How Surgical Mesh Works
When mesh is implanted, it triggers a healing response. Your body recognizes the mesh as a foreign material and sends inflammatory cells to the area. Over the following weeks, new blood vessels and collagen form around and through the mesh fibers. This process, called tissue ingrowth, essentially weaves your own tissue into the mesh, turning it into a reinforced layer that holds the repair in place.
The structure of the mesh matters. Meshes with larger pores allow more of your natural tissue to grow through them, which generally leads to better flexibility and fewer complications. Smaller pores or denser mesh can cause scar tissue to form in sheets rather than integrating smoothly, sometimes resulting in stiffness or shrinkage of the surrounding tissue.
Types of Mesh Materials
Surgical mesh falls into two broad categories: synthetic and biologic. Synthetic meshes are the most widely used and are typically made from polypropylene, polyester, or a form of Teflon. Polypropylene is by far the most common because it’s durable, relatively inexpensive, and has decades of clinical data behind it. Synthetic mesh can be either permanent, staying in the body indefinitely, or absorbable, gradually breaking down as your tissue heals.
Biologic meshes are made from animal or human tissue that has been processed to remove all living cells, leaving behind a collagen framework. These grafts come from sources like pig skin, pig intestinal lining, or donated human skin. The body eventually absorbs biologic mesh entirely, replacing it with your own tissue. Newer hybrid meshes combine both approaches, wrapping lightweight polypropylene in layers of biologic material.
The choice between synthetic and biologic matters for long-term results. A randomized trial following patients for 5 to 10 years found that synthetic mesh had a hernia recurrence rate of 11.8%, compared to 23.6% for biologic mesh. Synthetic mesh provides a more durable repair without increasing complications, which is why it remains the default for most procedures.
Common Uses for Mesh Surgery
Hernia Repair
Hernia repair is the most frequent reason for mesh surgery. When tissue or an organ pushes through a weak spot in the abdominal wall or groin, mesh covers and reinforces that gap. Without mesh, hernia repairs rely solely on stitching the tissue back together, which carries a higher risk of the hernia returning. A large meta-analysis found recurrence rates of about 2% for mesh-based inguinal hernia repairs, though a 10-year follow-up study found the rate can reach around 6% over a longer timeframe, particularly when ultrasound is used to detect small, symptom-free recurrences.
Stress Urinary Incontinence
Mid-urethral sling procedures use a narrow strip of mesh placed beneath the urethra to provide support. When you cough, sneeze, or exercise, the sling prevents the urethra from dropping, which stops urine leakage. The FDA considers these slings to have a well-established safety and effectiveness profile, and they remain a standard treatment option. Patients should be informed that non-mesh alternatives exist.
Pelvic Organ Prolapse
Mesh was previously used in transvaginal surgeries to treat pelvic organ prolapse, where the bladder, uterus, or rectum drops from its normal position. In 2019, the FDA ordered manufacturers to stop selling mesh intended for transvaginal prolapse repair in the United States, concluding that the risks outweighed the benefits for that specific approach. Mesh is still used for prolapse repair through abdominal approaches, including open, laparoscopic, and robotic-assisted procedures, where the mesh suspends the top of the vagina to the lower spine.
Open vs. Laparoscopic Techniques
Mesh can be placed through a traditional open incision or through small keyhole incisions using a camera and specialized instruments. Open hernia repair uses a standard inguinal incision, while laparoscopic techniques typically involve three small port sites and a balloon to create working space behind the abdominal wall.
The tradeoffs are straightforward. Open repair is faster: about 50 minutes for a one-sided inguinal hernia compared to roughly 90 minutes laparoscopically. But laparoscopic patients recover faster. In one comparative study, hospital stays averaged 1.9 days for laparoscopic repair versus 2.2 days for open surgery. The bigger difference showed up in return to normal activities: about 7 days after laparoscopic surgery versus 14.5 days after open repair. Both approaches produce similar long-term recurrence rates of around 2%.
Recovery After Mesh Surgery
For groin hernia repair, most surgeons recommend about 2 weeks of limited physical activity regardless of whether the surgery was open or laparoscopic. A survey of European hernia specialists found that 55 to 68% considered 2 weeks sufficient before returning to heavy lifting, sports, or physically demanding work. Some research suggests that light daily activities and non-strenuous work can safely resume within 3 to 5 days.
Open repair of larger abdominal or incisional hernias requires a longer recovery, with most experts recommending 4 weeks before full physical strain. Your surgeon will set specific restrictions based on the size and location of your repair.
Risks and Complications
Mesh erosion is the most discussed complication. This occurs when the mesh wears through adjacent tissue, potentially causing pain, bleeding, discharge, or recurrent infections. Erosion rates vary widely depending on where the mesh is placed. For abdominal prolapse repairs performed robotically or laparoscopically, the median erosion rate across published studies is 1.9%, with 83% of studies reporting rates of 5% or less. Some erosions are asymptomatic and only found during routine exams. Transvaginal prolapse repair historically carried much higher erosion rates, up to 10.3% in the first year, which contributed to the FDA’s decision to pull those products from the market.
Chronic pain is another concern. Pain after mesh placement can be constant or appear only during certain activities like sex or exercise. It may stem from nerve irritation, mesh contraction, or ongoing inflammation. Initial treatment typically involves physical therapy and targeted injections. When conservative approaches fail, partial or complete mesh removal may be considered, though pain doesn’t always resolve after removal. Specialists in pelvic floor reconstruction are best equipped to evaluate persistent pain and determine whether the mesh is actually the source.
Signs that warrant follow-up include persistent vaginal bleeding or discharge after pelvic mesh placement, recurrent urinary tract infections, pain during sex (for either partner), or a feeling of the mesh through the skin or vaginal wall. Many complications appear months or even years after the original surgery. In one prospective study, mesh erosions were diagnosed as late as 45 months post-surgery.
When Mesh Removal Is Needed
Mesh removal is not routine and should only happen when there is a clear reason, such as confirmed erosion, infection, or pain directly linked to the implant. Simply having mesh in place is not an indication for removal. For pelvic mesh specifically, the American College of Obstetricians and Gynecologists recommends that removal be performed by a surgeon with specialized training in pelvic reconstructive surgery, given the complexity of the procedure and the proximity of the mesh to the bladder, urethra, and bowel.