A series of 247 post-operative eventrations (POE) is reported with a study of general features, such as: patients' sex and age, size, location and etiology of POE (serial laparotomies, parietal sepsis), classic predisposing factors. Pre-operative preparation involved the use of Goni-Moreno progressive pneumo-peritoneum in 18.5% of patients. The procedures used were: parietal suturing (25%), the same plus a dacron buttress (6%), or a large reinforcing Dacron Mesh prosthesis (67%). Early sepsis was slightly more frequent after Dacron use. The incidence of predisposing factors in this field is reported. Other complications of the use of Dacron Mesh are studied (hematomas, skin necrosis). The post-operative uncomplicated course rate is 91%. Follow-up of 77% of operated patients showed satisfactory overall results in 81% of patients treated with Dacron prosthesis and in less than 50% after parietal suturing. Aseptic recurrence factors and late sepsis factors are also studied. Finally the efficiency of POE prosthetic repair is stressed and mandatory rules for the safe of Dacron Mesh are underlined.