Table 1.

Classification of peripheral arterial disease (PAD) according to Fontaine and Rutherford.

Fontaine		Rutherford
stage	symptoms	grade	category	symptoms
I	asymptomatic	0	0	asymptomatic
II a	walking distance > 200 m	I	1	marginal
II b	walking distance < 200 m	I	2	significant
		I	3	serious claudication
III	ischemic rest pain	II	4	ischemic rest pain
IV	tissue loss	III III	5 6	small area necrosis extensive necrosis