Aim Sublay mesh placement in incisional hernia repair (IH) does not seem to show lower surgical site infection (SSI) or recurrence than onlay placement, according to a recent review. Our aim was to analyze both techniques in an abdominal wall department. Material and Methods Prospective data collection of all IHs for four years. Results were analyzed at one month and during follow-up. The characteristics of IH, operative time, incidence of SSI and recurrence was compared by groups depending on location of the mesh in sublay (SM) or onlay (OM). Results “The surface area of the hernial defect was greater in the SM group (216±338 vs 68±84cm2; P = 0.002), as well as longer surgical time (131±91 vs 70±54 min; P < 0.001). A higher number of hematoma was diagnosed in the SM (OR 1.39; CI95% 1.21-1.60; P = 0.18) in 88 operations. No differences were observed in the incidence of SSI between the groups (27.7 vs 21.7%; P = 0.78). 74 patients completed a mean follow-up of 11.4 months, any difference in IH recurrence appeared (5.8 vs 9.1%; P = 0.63) in SM group vs OM group, respectively. Conclusions A SM repair is performed in IHs with large defects, which entails a longer surgical time and the appearance of hematoma, although no statistically significant differences in the rate of SSI or IH recurrence was observed between SM and OM repair.
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