The sample size was calculated based on the study of Van Ramshorts, which found 40% of incisional hernia in patients at high risk with a score higher than 6 as the predictor scale, against 12% for the submission of the same in high-risk patients, earning a total of 76 patients, divided into 2 groups of 38 patients for each of the techniques, considering able to detect a difference of at least 28% in the proportion of patients without hernia, with 80% power and an alpha of 0.5% with two tails.