Study of the AFB and Stenting of the Iliac Arteries

Inclusion Criteria: * Patients with unilateral steno-occlusive iliac lesions (TASC types C, D) and with chronic lower limb ischemia * Rutherford classification category 3-5 chronic limb ischemia, * age: 45-75 years old. * Patients who consented to participate in this study. Exclusion Criteria: * Aortic thrombosis, concomitant abdominal aortic or iliac aneurysms, acute limb ischemia or vasculitis; * Flush occlusion of the common iliac artery; * Ipsilateral common femoral arteries steno-occlusive disease (occlusion or stenosis \>50%); * Ipsilateral profunda femoris artery steno-occlusive disease (occlusion or stenosis \>50%); * Refusal to participate in the study; * Stroke or myocardial infarction within the past 3 months; * Ischemic heart disease with New York Heart Association functional class IV; * Malignant tumor with an estimated life span of under 6 months; * Previous ipsilateral or contralateral surgery (bypass, hybrid or stenting); * Hepatic or renal insufficiency (bilirubin\> 35 mmol/l, glomerular filtration rate \<60 ml/min/1.73 m2); * Severe calcification of the aorta and iliac arteries intolerant to balloon angioplasty (as determined by the Peripheral Arterial Calcification Scoring System on computed tomography angiography as interpreted by a vascular radiologist):12 * unilateral calcification ≥ 5cm (Grade 2), bilateral calcification ≥ 5cm (Grade 4) or circumferential calcification , defined as 270°-360° around the circumference of aorta and/or iliac arteries.