This is a weakness or defect in the anterior abdominal wall, which may be congenital or acquired. It results in the protrusion of intra-abdominal contents, which are at risk of strangulation or obstructing, or is simply painful. The hernia is usually repaired via a transverse incision over the hernia protrusion with a Mesh to cover the defect.
The hernia develops due to a weakness in the midline linea alba where the fibres of the rectus sheath decussate.
This is an iatrogenic hernia resulting from previous incisions over the anterior abdominal wall. Incisional hernia formation is due to poor abdominal wall structure, infection, of failure in surgical technique. The rate of incisional hernia occurrence has been reported as high as 13%.
Both laparoscopic and open surgical repair have been used for incisional hernias.