缺血性下肢动脉病主要分两类:一类是人们熟悉的血栓闭塞性脉管炎;另一类是动脉粥样硬化。前者多见于嗜烟者、下肢动脉缺血者,病变大多侵犯中、小动脉;后者多见于老年人,病变多位于中、粗动脉。随着人口的日益老龄化,老年人发病率正在日益增多。冬天是缺血性下肢动脉病的易发季 Ischemic lower extremity arterial disease is divided into two categories: one is familiar with thromboangiitis obliterans; the other is atherosclerosis. The former is more common in addicts, lower extremity arterial ischemia, lesions mostly invaded the middle and small arteries; the latter more common in the elderly, the lesions are located in the thick arteries. As the population ages, the incidence of the elderly is increasing. Winter is ischemic lower extremity arterial disease prone season