Methods, compositions, and devices for treating a vascular aneurysm, including an abdominal aortic aneurysm, are disclosed. In particular, the various embodiments relate to a method of treating an abdominal aortic aneurysm by increasing the mechanical stiffness of an aortic segment adjacent to the abdominal aortic aneurysm in a subject. The mechanical stiffness of the adjacent aortic segment may be increased, for example, by applying a surgical adhesive or intravascular stent. Such treatment reduces stress on the aortic wall and limits further growth of the abdominal aortic aneurysm.