Table 1.

Fontaine classification

Stage	Symptoms
I	Asymptomatic, incomplete blood vessel obstruction
II	Mild claudication pain in limb
IIA	Claudication at a distance >200 m
IIB	Claudication at a distance <200 m
III	Rest pain, mostly in the feet
IV	Necrosis and/or gangrene of the limb

Note: Data from a previous study.¹¹