A randomised controlled trial (RCT) of 42 patients treated by endovascular or open repair reported that 14% (3 out of 21) of patients in the endovascular group required open repair because of endograft occlusion during a mean follow-up of 47 months. In the case series of 50 patients, stent-graft occlusion occurred in 16% (9.57) of aneurysms (2 were successfully treated by thrombolysis, 5 were treated by femoropopliteal bypass, 1 patient was asymptomatic and was not treated, and in the remaining patient, treatment of the occlusion was delayed leading to severe limb ischaemia requiring amputation).