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Back| Classification | Clinical Manifestation |
|---|---|
| Grade A | 1. Single stenosis of tibial or popliteal artery, length <1cm |
| Grade B | 1. Multiple focal stenoses of tibial or popliteal artery, each segment length <1cm 2. 1-2 focal stenoses at the trifurcation of the tibial artery, each segment length <1cm 3. Short segment stenosis of tibial or popliteal artery associated with femoropopliteal PTA |
| Grade C | 1. Stenosis length 1-4cm 2. Occlusion of tibial or popliteal artery, length 1-2cm 3. Extensive stenosis at the trifurcation of the tibial artery |
| Grade D | 1. Occlusion of tibial or popliteal artery, length >2cm 2. Diffuse disease of tibial or popliteal artery |
Explanation
"Grade A" lesions are localized with good expected outcomes and should be treated with endovascular techniques;
"Grade B" lesions are slightly longer, but considering the risks and expected patency of surgery versus endovascular treatment, endovascular treatment is still preferred;
"Grade C" lesions have good outcomes with surgical reconstruction, but for patients with high-risk factors, minimally invasive endovascular techniques can be attempted;
"Grade D" lesions should be treated surgically.
