Is the transection of the hernia sac during laparoscopic inguinal hernioplasty safe and feasible? An updated systematic review and meta-analysis

There is a debate over whether to transect or completely reduce the hernia sac during laparoscopic tension-free repair of inguinal hernia. This study endeavors to systematically assess the efficacy and safety of two approaches, namely transected sac (TS) and completely reduced sac (RS), in laparoscopic tension-free repair of inguinal hernia. Utilizing a meta-analysis methodology, we aim to provide a comprehensive analysis of these techniques. A comprehensive search was conducted across PubMed, Embase, Cochrane Library, Web of Science, and ClinicalTrials.gov databases to identify comparative studies focusing on laparoscopic tension-free repair of inguinal hernia, specifically comparing TS and RS techniques. The selected studies were subjected to meta-analysis using RevMan 5.3 software. A total of 8 studies, involving 2995 patients with inguinal hernia, were included in the analysis. The meta-analysis results revealed that the TS group had a higher incidence of seroma compared to the RS group [OR = 1.74, 95% CI (1.35, 2.25), P < 0.0001], and a prolonged time to return to normal activity postoperatively [MD = 0.99, 95% CI (0.85, 1.14), P < 0.00001]. However, no statistically significant differences were observed between the two groups in terms of operation time [MD = -1.75, 95% CI (- 8.72, 5.22), P = 0.62], incidence of postoperative pain [OR = 1.00, 95% CI (0.41, 2.44), P = 1.00], overall postoperative complication rate [OR = 0.98, 95% CI (0.43, 2.20), P = 0.95], and recurrence rate fOR = 2.53, 95% CI (0.61, 10.39), P = 0.20]. Transected sac in laparoscopic inguinal hernia repair is associated with an increased incidence of seroma and a longer recovery time for patients to return to normal activity. Clinical trial registration Registration number is INPLASY20223110070