Mesh vs non-mesh hernia repair

Before mesh became standard practice in the 1980s and 1990s, hernia repair meant stitching your own tissue back together to plug the gap in the abdominal wall. This approach — called a primary tissue repair — had a recurrence rate of around 10–15% for inguinal (groin) hernias. In other words, roughly one in seven patients would find their hernia came back. For large hernias or in people with weaker tissue, the return rate was even higher.

The introduction of polypropylene mesh — a soft, flexible, porous synthetic material — changed outcomes substantially. When a mesh patch is placed over or behind the hernia defect, the repair is spread across a larger area, and your body's own tissue gradually grows into the mesh over several weeks, reinforcing the repair. In published series, mesh repair brings recurrence rates down to roughly 1–3 in every 100 for keyhole inguinal repair, 2–5 in every 100 for open inguinal repair, and 3–10 in every 100 for ventral repairs.

Today, mesh hernia repair is the recommended standard of care for inguinal, umbilical, and incisional hernia repair in adults worldwide.

Lichtenstein tension-free mesh repair (open)

This is the most widely performed open hernia repair in the world. Your surgeon makes a 5–7 cm incision in your groin, gently pushes the hernia back, and places a flat sheet of polypropylene mesh over the weakened area, stitching it in place. The word "tension-free" simply means the mesh bridges the gap without pulling your surrounding tissue tight — which is why it is so much more comfortable to recover from than the older style of repair.

It can be done under local, regional, or general anaesthesia and is usually a day procedure, taking around 30–45 minutes. It is the standard open repair for a primary (first-time) inguinal hernia.

TAPP (transabdominal preperitoneal) laparoscopic repair

This is the keyhole version. Your surgeon makes three small cuts (5–10 mm each), enters the abdomen, and opens the peritoneum — the thin inner lining of the abdominal wall — to reach the space behind it. A large mesh is placed behind the abdominal wall, covering both the inguinal and femoral spaces, and the peritoneum is closed back over it. This approach works especially well if you have hernias on both sides, or if this is a recurrent hernia.

TEP (totally extraperitoneal) laparoscopic repair

TEP is similar to TAPP, but the abdominal cavity itself is never entered — the entire repair happens in the layer of tissue just behind the abdominal wall. It requires a general anaesthetic and is technically more demanding, but it avoids any disturbance of the abdominal contents.

Both keyhole approaches use general anaesthesia and place a larger mesh than the open technique; in published series they tend to result in less pain at the wound site afterwards and a faster return to physical activity and work.

If you would prefer not to have mesh, the best-established alternative is the Shouldice repair, developed at the Shouldice Hospital in Toronto. Instead of using a synthetic patch, the surgeon carefully rebuilds the inguinal floor — the wall of the groin — using four layers of your own tissue stitched together with continuous suture. In published series this achieves recurrence rates of around 1–3%, lower than a simple tissue stitch, though still higher than mesh overall.

It is worth knowing that the Shouldice Hospital's results come from a very high level of specialisation — their surgeons do almost nothing else. In general surgical practice, the Shouldice technique is harder to perform to the same standard. For most patients in Australia, published evidence supports better long-term durability with mesh repair. But a non-mesh repair is a legitimate option for the right patient.

When is non-mesh repair considered?

• If there is infection at the operative site — for example, if bowel has perforated or there is established infection around the hernia, placing synthetic mesh carries a high risk of the mesh itself becoming infected. In these situations, a tissue repair is safer.
• If you prefer not to have mesh — after a full informed discussion about the higher recurrence risk, some patients decline mesh for personal reasons. That preference is respected.
• Small hernias in young patients with strong tissue — some surgeons will offer non-mesh repair in this specific group.

No — and this distinction matters. You may have heard about the pelvic mesh controversy, which was widely covered in the Australian media and was the subject of a Senate inquiry. That controversy relates to mesh placed through the vagina to treat pelvic organ prolapse and stress urinary incontinence. That mesh was positioned in close contact with sensitive pelvic structures, under very different mechanical forces, and in a very different environment to the abdominal wall.

Abdominal wall mesh for hernia repair has a different safety profile. It sits in the abdominal wall, your body's fibrous tissue grows into it over several weeks locking it in place, and there are decades of data showing it is safe and effective. The serious problems linked to vaginal mesh — erosion into adjacent organs, severe ongoing pelvic pain — are not the same as the much rarer complications occasionally seen with hernia mesh.

If you have concerns about mesh because of what you have heard or read about pelvic mesh, please raise this at your consultation. Understanding the difference is important before you make a decision.

All surgical implants carry some risk, and it is important that you understand yours before going ahead. Here are the main ones associated with abdominal hernia mesh, with honest context:

• Chronic pain — in published series, around 1–5 in every 100 patients experience moderate-to-severe persistent groin pain after mesh repair, with broader figures ("any persistent discomfort") ranging up to around 10 in every 100. This is usually related to a nerve being irritated or the mesh causing some inflammation. Most cases settle within several months. Severe, persistent pain that requires mesh removal does happen, but it is uncommon.
• Mesh infection — rare, occurring in less than 1% of planned (elective) repairs. When it does happen, it is a serious complication that may require removing the mesh and a prolonged course of treatment.
• Mesh migration or shrinkage — older, heavier mesh was more prone to shrinking or folding after surgery. Modern lightweight mesh is designed specifically to minimise these issues.
• Seroma — a build-up of fluid around the mesh site in the first weeks after surgery. This is actually quite common and is not dangerous — it almost always settles on its own without any treatment.

These risks need to be weighed against the most important benefit of mesh: a recurrence rate of roughly 1–5% depending on hernia type and approach (in published series), compared to 10–15% without mesh. For most patients, the benefit is clearly worth it — but your surgeon will go through this with you so you can make an informed choice.

There is no single answer that applies to everyone. The choice of repair technique depends on a number of things that you and your surgeon will work through together:

• What type of hernia you have (inguinal, femoral, umbilical, incisional)
• How big the hernia is and how strong the surrounding tissue looks
• Whether this is a first-time hernia or a recurrence
• Whether you have hernias on both sides — if so, keyhole mesh repair is usually strongly favoured
• Whether you are fit for a general anaesthetic, or whether local or regional anaesthesia is more appropriate
• What your job involves and how quickly you need to get back to physical activity
• Your own preferences, after a full informed discussion

For most people with a primary inguinal hernia, laparoscopic mesh repair (TAPP or TEP) or open Lichtenstein mesh repair will be recommended. Your surgeon will explain which approach they favour for your specific situation and why.