Evaluation of Mesh Closure of Laparotomy and Extraction Incisions in Open and Laparoscopic Colorectal Surgery: A Systematic Review and Meta-Analysis.

Background and Objectives: Evisceration and incisional hernia (IH) represent a significant morbidity following open or laparoscopic colorectal surgery where midline laparotomy or extraction incision (EI) are performed. We executed a systematic review to evaluate primary mesh closure of laparotomy or EI in colorectal resections of benign or malignant conditions. Methods: A comprehensive literature search was performed using PubMed, Science Direct, Cochrane, and Google Scholar databases for studies comparing prophylactic mesh to traditional suture techniques in closing laparotomy in open approach or EI when minimally invasive surgery was adopted in colorectal procedures, regardless of the diagnosis. Both IH and evisceration were identified as primary outcomes. Secondary outcomes included surgical site infections (SSI), postoperative seroma, and length of hospital stay (LOS). Results: Six studies were included in our analysis with a total population of 1398 patients, of whom 411 patients had prophylactic mesh augmentation when closing laparotomy or EI, and 987 underwent suture closure. The mesh closure group had a significantly lower risk of developing IH compared to the conventional closure group (OR 0.23, p = 0.00001). This result was significantly consistent in subgroup analysis of open laparotomy or EI of laparoscopic surgery subgroups. There was no statistically notable difference in evisceration incidence (OR 0.51, p = 0.25). Secondary endpoints did not significantly differ between both groups in terms of SSI (OR 1.20, p = 0.54), postoperative seroma (OR 1.80, p = 0.13), and LOS (MD -0.54, p = 0.63). Conclusions: primary mesh reinforcement of laparotomy or EI closure in colorectal resections lessens IH occurrence. No safety concerns were identified; however, further high-quality research may provide more solid conclusions.