Supported vs Unsupported Grafts

Supported endografts have the graft skeleton throughout their course, while unsupported grafts only have it at the attachment sites.

Unsupported grafts have a greater propensity for kinking compared to supported grafts. In addition, the natural history of type IA endoleaks is different between supported and unsupported endografts. While small type IA endoleaks in unsupported grafts can be watched for at least 1 month after placement (spontaneous resolution is possible), type IA endoleaks in supported grafts don't usually resolve spontaneously and may rupture.