Laparoscopic colorectal resection does not reduce incisional hernia rates when compared with open colorectal resection.

Background: Laparoscopic colorectal surgery has been reported to have some advantages compared with open surgery. The purpose of this study was to evaluate the incidence of incisional hernias after elective open colorectal resection versus laparoscopic colorectal resection.

Methods: The study group consisted of 104 patients who underwent elective colorectal resection or reversal of a Hartmann's procedure between November 2003 and March 2005. Baseline data were prospectively recorded on all patients. All were examined by an independent observer for evidence of incisional hernia after they had reached a minimum follow up of one year.

Results: At a median follow up of 22 (17-26) months, nine patients had died and 95 were reviewed. Of these, 32 underwent laparoscopic resection while 63 had open surgery. Patients were well matched for all baseline characteristics. The median length of the wound in the laparoscopic group was 9 cm (IQR: 8-11 cm) while in the open group it was 20.8 cm (IQR: 17-24 cm). There was no significant difference in incisional hernia rates between the groups (3 vs. 10, p = 0.52) or in those who had symptoms from their hernia (p = 0.773).

Conclusions: Laparoscopic colorectal resection does not appear to reduce incisional hernia rates when compared with open surgery. Large randomised trials are required to confirm these findings.