33% of patients had surgery on the abdominal wall to treat any disease that is likely to have a hernia of the abdominal wall after surgery and of these patients, 33% of patients will need surgery to treat the abdominal wall hernia. This is because at the incision site, the muscles around the surgical scar are weakened, leading to part of the intestines coming out of the abdominal wall. This phenomenon is common in the elderly, overweight people, people who are less active after surgery, people who have to operate many times through an incision.