Laparotomy aortic surgery for the management of an abdominal aortic aneurysm has several distinct stages which will not be altered by the performance of this study. The patient arrives in the operating room and is taken care of by the anesthetic team. The patient is then placed in the correct position for optimal surgical management and a skin cleansing procedure is carried out. A sterile drape is applied and the preoperative checklist in force in the establishment is completed. Initial dissection of the aneurysm and its proximal and distal control is left to the discretion of the principal surgeon. Once the aortic aneurysm has been controlled, the main surgeon places self-static retractors and then prepares to clamp the aorta. The surgeon initiates aortic clamping to create the aorto-biliac or bifemoral bypass. Once the bypass has been created, the operation is completed by closing the surgical approach and the skin incision. The bandage is then applied.

To measure the dimensions of the working volume of an open abdominal aortic surgery using a camera to create an algorithm by associating them with the preoperative images and morphometric data of the patient.

Coefficient of determination R² which measures the quality of prediction of work volume as a function of patient BMI