A method for surgical treatment of inguinal hernias includes the steps of providing a surgical prosthesis in the form of a laminar component having an approximately intermediate cut line forming two asymmetrical halves each having at a distal end thereof an end tab, and overlaying the asymmetrical halves of the laminar component by superimposing the end tabs of the asymmetrical halves so as to form two reinforced triangular areas aligned with anatomically weak areas of the patient and to create a central through cavity so that a spermatic cord of the patient extends through the central through cavity. The surgical prosthesis is intended to protect weak points in an abdominal wall of the patient.