Comparing Surgical Procedures for Umbilical Hernia Repair: Which One Is Most Effective?

Comparing Mesh and Sutures in Umbilical Hernia Treatment

Understanding Umbilical Hernia

An umbilical hernia occurs when a portion of the intestines protrudes through an opening at the belly button. Typically, the umbilical cord passes through a small gap in the abdomen, which closes shortly after birth, forming the belly button. However, in some individuals, the abdominal muscles do not fully close, leaving a gap covered by skin.

Treatment Options for Umbilical Hernia

In most cases, umbilical hernias in children resolve without intervention. Conversely, adults are generally advised to undergo surgical repair if the hernia persists. This recommendation aims to prevent complications associated with hernias that enlarge or become painful. The size of the hernia can vary significantly, with openings ranging from less than 1 cm to several centimeters. For larger hernias, surgeons typically prefer using mesh rather than sutures. Mesh, a woven material made from the same substance as sutures, is more effective in resisting the forces that may cause the hernia to reopen.

Clinical Trial Overview

Study Design

A research team in the Netherlands conducted a clinical trial to evaluate the safety and effectiveness of mesh versus sutures in treating smaller umbilical hernias, measuring between 1 cm and 4 cm. The findings were published in The Lancet. Patients requiring surgery were recruited from hospitals in the Netherlands, Germany, and Italy. The allocation of treatment—mesh or sutures—was determined randomly during surgery, ensuring unbiased results. Both patients and investigators were kept unaware of the treatment type until the study’s conclusion.

Patient Enrollment and Assessment

The study enrolled 300 adult participants, with 284 completing the 30-month follow-up. Eligible candidates had primary umbilical hernias without prior surgical history. Patients underwent surgery for various reasons, including cosmetic concerns, pain, and daily life interference. Follow-up assessments occurred at two weeks, three months, and at 12 and 24-30 months post-surgery. Evaluations focused on hernia recurrence, pain levels, surgical complications, and quality of life through questionnaires.

Study Findings

Effectiveness of Mesh Repair

Results indicated that only 4% of patients in the mesh group experienced a recurrence of their umbilical hernia, compared to 12% in the suture group. No significant differences were noted in pain, complications, or quality of life between the two groups. The average time to place the mesh was slightly longer—seven minutes—than for sutures, but this difference is not considered clinically significant.

Implications for Smaller Hernias

While previous studies recommended mesh placement for hernias larger than 4 cm, this study provides high-quality evidence supporting its use for smaller hernias ranging from 1 cm to 4 cm. For hernias smaller than 1 cm, mesh placement may be challenging and could necessitate enlarging the hernia for proper sealing. A limitation of the study is the uncertainty regarding long-term complications beyond the 30-month follow-up, as researchers did not extend the study period due to concerns about patient availability for follow-up.

Conclusion

Based on the lower recurrence rates associated with mesh placement compared to sutures, alongside the comparable pain levels, complications, and quality of life outcomes, the authors recommend mesh as the preferred method for repairing all umbilical hernias measuring at least 1 cm.

Reference

Kaufmann R, Halm J, Eker H, et al. Mesh versus suture repair of umbilical hernia in adults: a randomised, double-blind, controlled, multicentre trial. Lancet. doi:10.1016/S0140-6736(18)30298-8.