Inclusion Criteria:  Patient treated by the peripheral angioplasty department of Claude Galien Hospital from January 2010 and with at least 1 year of follow-up after the revascularization procedure Patient treated for symptomatic chronic ischemia of the lower limbs defined by Rutherford categories 2-4 and / or Leriche stage greater than 2a Stenosis or restenosis (history of balloon angioplasty, active balloon or bare stent) Degree of stenosis ≥ 50% by angiographic evaluation visual, by CT scan or by Doppler ultrasound Patient affiliated or beneficiary of a social security scheme Patient aged 18 or over Patient having been informed and not opposing this research  Exclusion Criteria:  Medical history of myocardial infarction or stroke within 3 months of the revascularization procedure Unstable angina at the time of the revascularization procedure Sepsis at the time of the revascularization procedure Major under guardianship, curatorship or other legal protection, deprived of liberty by judicial or administrative decision Hospitalized without consent Pregnant, breastfeeding or parturient woman