Table 1.

Peripheral artery disease symptom classification: Fontaine stages and Rutherford categories

Fontaine classification		Rutherford classification
Stage	Symptoms	Category	Symptoms
I	Asymptomatic	0	Asymptomatic
II	Intermittent claudication	1	Mild claudication
		2	Moderate claudication
		3	Severe claudication
III	Ischemic rest pain	4	Ischemic rest pain
IV	Ulceration or gangrene	5	Ischemic ulceration (minor tissue loss)
		6	Ischemic gangrene (major tissue loss)