Laparoscopic or Conventional Mesh Repair of Incisional and Umbilical Hernia

Inclusion Criteria: * Age \> 18 * Incisional or umbilical hernia over 2 cm and less than 6 cm in diameter Exclusion Criteria: * Patients with a complicated incisional (pain, occlusion, cutaneous necrosis), irreductible painless incisional or umbilical hernia will not be considered as a complication * Patients with a recurrence of incisional hernia * Patients with an incisional or umbilical hernia whose lateral edges are located so that fixation of the mesh (which must extend beyond the 4 to 5 cm) is not possible * Pregnant women * Patients with HIV therapy * Patients with cirrhotic ascites or other signs of hepatic insufficiency (bilirubin\> 35 micromol / l; TP \< 55%) or significant thrombocytopenia (\< 60 000 platelets) * Patients with a contra indication for laparoscopy * Patients with a life expectancy \< one year, or whose mobility within two years of treatment will damage proper monitoring * Patients unable to understand information about the protocol