FP1.2 - Exploring Risk Factors and Incidence Patterns of Incisional Hernia following Colorectal Surgery: A Retrospective Cohort Study

Abstract Aims This study aimed to determine the incidence rate of incisional hernias (IH) following colorectal resections and identify risk factors associated with their development. Methods A retrospective cohort of 942 patients undergoing colorectal surgical resection between January 2020 and March 2023 were analysed. Data collected encompassed patient demographics, medical history, operative details, and complications. Comparative statistical tests and logistic regression were employed. Results The incidence of IH was 10.2% during a median follow-up of 11 months (4,12). Multivariate analysis revealed significant risk factors, including increased BMI (OR 1.063; 95% CI 1.029 – 1.097, p < 0.001), neoadjuvant chemotherapy (OR 2.098; 95% CI 1.021 – 4.314, p = 0.044) and midline extraction site (OR 15.465; 95% CI 3.292 – 31.591, p < 0.001). Conclusions With an IH incidence of 10.2%, this study identifies high BMI, neoadjuvant chemotherapy, midline extraction site, and laparotomy procedures as significant risk factors. Data also indicated a pfannenstiel incision is the preferred incision site during robotic surgery thereby minimising the risk of developing an incisional hernia and improving patient outcomes.