2. Aetiology of acute lower limb ischaemia

• Embolism: atrial fibrillation, mural thrombosis, vegetations, proximal aneurysm, atherosclertic plaque
• Thrombosis: at site of previous stenosis(atherosclerosis), popliteal aneurysm, graft occlusion, thrombotic conditions
• Others: arterial dissection, trauma, external compression etc.