What is the Fontaine classification?
The Fontaine classification is a widely used classification system for lower extremity ischemia. It describes four stages based on signs and symptoms.
- • Stage 1 is asymptomatic disease.
- • Stage 2a is intermittent claudication when walking more than 200 m.
- • Stage 2b is intermittent claudication when walking less than 200 m.
- • Stage 3 is rest pain.
- • Stage 4 is tissue necrosis or gangrene.