The Role of Mesh in Hernia Repair
Surgical mesh has been the standard of care for most hernia repairs for decades. When properly selected, positioned, and integrated, mesh significantly reduces recurrence rates compared to primary tissue repair alone. The vast majority of patients with mesh in place experience no complications.
However, a subset of patients develop significant mesh-related complications — including infected mesh, mesh migration, mesh contraction, and chronic mesh pain — that require specialized management. These complications represent some of the most technically demanding scenarios in abdominal wall surgery, and their management requires a complex hernia surgeon with specific experience in mesh explantation and definitive reconstruction.
Types of Mesh Complications
Mesh Infection
Most SeriousMesh infection is one of the most serious complications of hernia repair. Synthetic mesh — particularly heavyweight polypropylene — is susceptible to bacterial colonization, especially in contaminated operative fields or when wound complications occur postoperatively. Signs include persistent wound drainage, fever, redness, and pain at the repair site. Infected mesh often cannot be salvaged with antibiotics alone and requires surgical management.
Mesh Migration
Mesh can shift from its original position over time, particularly when fixation is inadequate or when the mesh is placed in a high-tension environment. Migrated mesh may cause pain in areas distant from the original repair, bowel obstruction, or erosion into adjacent structures. Diagnosis typically requires CT imaging.
Chronic Mesh Pain
Chronic pain at the mesh site — often described as burning, aching, or pressure — that persists beyond the expected healing period is a recognized complication of hernia repair. Mechanisms include nerve entrapment, mesh contraction causing traction on surrounding structures, and inflammatory reactions at the mesh-tissue interface. Chronic mesh pain can be debilitating and significantly impair quality of life.
Mesh Contraction and Shrinkage
All synthetic meshes undergo some degree of contraction after implantation as the surrounding tissue remodels. Excessive contraction can reduce the effective coverage area of the mesh, increase tension on fixation points, and contribute to recurrence or pain. Heavyweight meshes tend to contract more than lightweight alternatives.
Enterocutaneous Fistula from Mesh Erosion
ComplexIn rare but serious cases, mesh can erode through the bowel wall, creating an abnormal connection between the intestine and the skin surface — an enterocutaneous fistula. This complication requires complex staged surgery including bowel resection, fistula takedown, mesh removal, and abdominal wall reconstruction. It represents one of the most challenging scenarios in all of abdominal surgery.
When Is Mesh Removal Surgery Necessary?
Mesh removal surgery — also called mesh explantation — is indicated when the mesh is infected and cannot be salvaged, when it has migrated into or eroded through adjacent structures, or when chronic mesh pain is severe and unresponsive to conservative management. The decision to remove mesh is not taken lightly, as explantation is a complex operation with significant risks.
"Mesh removal is not the end of the story — it is the beginning of reconstruction. The question is not just how to take the mesh out, but how to rebuild the abdominal wall after it is gone."
— Program PhilosophyAfter mesh removal, the abdominal wall must be reconstructed. Depending on the degree of contamination, the quality of remaining tissue, and the size of the defect, reconstruction may involve biologic mesh, absorbable synthetic mesh, or staged repair. This is precisely the scenario where the multidisciplinary model — combining expert general surgery with reconstructive plastic surgery — provides the greatest benefit.
For Referring Physicians: Managing Mesh Complications
Patients presenting with suspected mesh infection, chronic mesh pain, or mesh migration should be referred early to a center with specific expertise in infected mesh repair and mesh explantation. Key steps prior to referral:
- Obtain CT abdomen/pelvis with contrast to assess mesh position, integrity, and surrounding structures
- Culture any wound drainage if present
- Avoid repeated attempts at wound closure over infected mesh — this delays definitive management
- Document prior operative reports including mesh type, size, and fixation method
- Provide nutritional assessment — malnourished patients require optimization before reconstruction