Hemodynamic comparison of stent configurations used for aortoiliac occlusive disease

Aortoiliac occlusive disease involving the aortic bifurcation is treated with kissing stents on a regular basis. The midterm and long-term results cannot compete with open aortic repair, possibly because of disturbed blood flow. In response to the varying clinical results, several stent configurations have been introduced, most of them promoting a more physiologic reconstruction of the aortic bifurcation to ensure undisturbed blood flow. However, the hemodynamic differences between frequently used aortoiliac stent configurations have never been quantified. Insight into the local hemodynamics expands the knowledge on the interaction between stent geometry and blood flow. Furthermore, the results complement current clinical results and aid vascular specialists in their choice of stent configuration.