Review
Meta-analysis of randomized trials comparing nonpenetrating vs mechanical mesh fixation in laparoscopic inguinal hernia repair

https://doi.org/10.1016/j.amjsurg.2015.06.008Get rights and content

Highlights

  • Bioglue has recently emerged as an alternative means of mesh fixation in open and laparoscopic groin hernia repair.

  • Synthesis of data suggests that this method reduces chronic postoperative pain, without increasing morbidity or recurrence.

  • Longer term data on recurrence are needed.

Abstract

Background

Evidence for open groin hernia repair demonstrates less pain with bioglue mesh fixation compared with invasive methods. This study aimed to assess the short- and long-term effects of laparoscopic groin hernia repair with noninvasive and invasive mesh fixation.

Data Sources

A systematic review of MEDLINE, CENTRAL, and OpenGrey was undertaken. Randomized trials assessing the outcome of laparoscopic groin hernia repair with invasive and noninvasive fixation methods were considered for data synthesis. Nine trials encompassing 1,454 patients subjected to laparoscopic hernia repair with mesh fixation using biologic or biosynthetic glue were identified. Short-term data were inadequate for data synthesis. Chronic pain was less frequently reported by patients subjected to repair with biologic glue fixation than with penetrating methods (odds ratio .46, 95% confidence interval .22 to .93). Duration of surgery, incidence of seroma/hematoma, morbidity, and recurrence were similar.

Conclusions

Laparoscopic groin hernia repair with bioglue mesh fixation was associated with a reduced incidence of chronic pain compared with mechanical fixation, without increasing morbidity or recurrence. Longer term data on recurrence are necessary.

Section snippets

Protocol

A protocol was built by the primary authors, which was subjected to modification after proposal and consensus of the author team. The final protocol was registered and is fully accessible from the International Prospective Register of Systematic Reviews (registration no. CRD42014015374), a database built and maintained by the Centre for Reviews and Dissemination of the University of York, UK.22 The protocol conformed to the Preferred Reporting Items in Systematic reviews and Meta-Analyses

Selection of studies

A total of 298 records were identified in the MEDLINE, CENTRAL, and OpenGrey databases. First-level screening excluded 260 records and 25 unique records were selected for full-text review. Nine trials fulfilled the predetermined inclusion criteria and were included in the meta-analysis.27, 28, 29, 30, 31, 32, 33, 34, 35 The search and selection process are outlined in Fig. 1. A list of excluded reports is available on request.

Study characteristics

No randomized trials reported on the use of self-adhering meshes or a

Comments

An increased likelihood for postoperative pain beyond 3 months after laparoscopic inguinal hernia repair with penetrating mesh fixation is supported by the present analysis, with similar perioperative morbidity, duration of surgery, and risk for recurrence when compared with bioglue fixation. There were only 4 available trials providing relevant data, which limits the confidence on this outcome estimate. However, consistent results with no evidence of heterogeneity were demonstrated. Available

Conclusions

In view of the results of the present analysis and the features of the included reports, the use of bioglues may be supported as an alternative approach to mechanical fixation in laparoscopic groin hernia repair without an increase in operative morbidity. Routine application cannot be supported until long-term results are available. Adequate reporting of short-term and long-term results in future research within the context of established surgical principles is essential.

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      Citation Excerpt :

      Several techniques for mesh fixations have been used including suture, glue or self-gripping mesh for open hernia repair (OHR); metallic tack, absorbable tack, glue, suture, self-gripping mesh or even non-fixation techniques for laparoscopic hernia repair (LHR). Up to date, there have been eight systematic reviews and meta-analyses (SRMAs) on OHR [4–11] (i.e., glue vs. suture (n = 5) [4,5,7,8,10] and self-gripping mesh vs. suture (n = 3) [6,9,11] and one network meta-analysis (NMA) [12] For LHR, comparisons were tack and glue (n = 6) [9,13–17]. Fixation versus no fixation (n = 3) [9,18,19].

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    There were no relevant financial relationships or any sources of support in the form of grants, equipment, or drugs.

    The authors declare no conflicts of interest.

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