Foot Perfusion Analysis to Predict Limb Salvage

This study aims at evaluating the correlation between foot perfusion on angiographies performed before and after revascularization and limb salvage in patients with critical limb ischemia.

Inclusion Criteria: * Patients with critical limb ischemia Rutherford 4, 5 and 6, with at least one pre-operative exam (CTA, magnetic resonance angiography or ultrasound) demonstrating a peripheral arterial disease, and requiring an endovascular or hybrid (meaning combined with a surgical technique) revascularization of the lower limb. Exclusion Criteria: * Patients not willing to give their consent to study enrollment * Patients under 18 years old * Patients with severe renal insufficiency (estimated creatinine clearance \< 30 mL/min), without dialysis * Patients with life threatening septic wounds who would require an amputation at the initial presentation