Surgery for Complex Abdominal Wall Defects: Update of a Nine-Step Treatment Strategy.

Complex abdominal wall defects (CAWDs) are a new surgical entity that require a dedicated and multidisciplinary approach. The spectra of CAWDs and complex abdominal wall reconstruction (CAWR) are poorly defined, and may include any of these elements: large or multiple recurrent hernia, presence of previously placed mesh (open or laparoscopic), loss of abdominal wall domain due to trauma, infection or tumor resection, hernia in the presence of enterocutaneous or enteroatmospheric fistulae (ECF/EAF), hernia in the presence of infected sinus tract, large debilitating parastomal hernia, hernias in the presence of synthetic erosion into the bowel or causing intestinal obstruction, eroded hernias post open abdomen management with skin graft in the presence of intraabdominal catastrophe or massive trauma, and hernias (umbilical or ventral/incisional) in patients with cirrhosis in the presence of massive ascites. The relevance of abdominal wall reconstruction with reinforcement using synthetic or biological mesh has never been as high as it is now. In particular, the use of biological mesh is rising exponentially due to its inherent properties. We previously described a nine-step approach to the management of difficult abdomen with enterocutaneous fistula. In this paper, we update this strategy based on our recent experience with almost 300 patients at our institution who underwent CAWR. Special attention is paid to the management of contaminated fields and the rationale of using biological mesh.