Summary: A technique for the surgical treatment of parastomal hernias is described which uses a direct approach and the insertion of a polyester prosthesis in the retro-or inter-muscular position. Fifteen patients have been so treated without immediate complications, namely infectious. Two recurrences have been recorded 8 and 18 months afterwards, the average follow-up being 4 years. This technique allows an effective treatment of these hernias even in the presence of associated complications (fistula, stenosis, prolapse).