Inclusion Criteria:  Patients with a lateral incisional hernia L3 European Hernia Society classification Patients with a lateral incisional hernia L4 European Hernia Society classification Patients older than 18 years old  Exclusion Criteria:  Midline incisional hernia. Patients with a parastomal hernia Patients with a primary midline ventral hernia Patients with a primary lateral hernia. Age under 18 years old