Table 2.

Leriche-fontaine classification.

Stages	Symptoms	Pathophysiology	Pathophysiological classification
I	Asymptomatic or effort pain.	Relative hypoxia	Silent arteriopathy
II A	Effort pain/pain-free walking distance >200 m.	Relative hypoxia	Stabilized arteriopathy, noninvalidant claudication
II B	Pain-free walking distance <200 m.	Relative hypoxia	Instable arteriopathy, invalidant claudication
III A	Rest pain, ankle arterial pressure >50 mm Hg.	Cutaneous hypoxia, tissue acidosis, ischemic neuritis	Instable arteriopathy, invalidant claudication
III B	Rest pain, ankle arterial pressure <50 mm Hg.	Cutaneous hypoxia, tissue acidosis, ischemic neuritis	Instable arteriopathy, invalidant claudication
IV	Trophic lesions, necrosis or gangrene.	Cutaneous hypoxia, tissue acidosis, necrosis	Evolutive arteriopathy

*Adapted from [41].