Imaging the Stented Superficial Femoral Artery:

Fracture Analysis

John Karwowski, MDAssistant Professor

Division of Vascular Surgery

The Superficial Femoral Artery

Supplies the leg below the knee

Straight line conduit

The Superficial Femoral Artery

Prone to atherosclerosis and occlusion

Stent Failure

In-stent restenosis De facto primary failure

mode of SFA stenting Flow Compromise Thrombosis

Intimal Hyperplasia

Injury response Cellular mediated Pathologic

narrowing

J Invasive Cardiol 2003

Stent Fractures

Unclear contribution Severe recoil of the

original lesion? Mobile and free

superficial femoral artery?

Cause or coincidence?

Classification

Current Methods

FluoroscopyHi definition X-ray

Not validatedDifficult to reproduce

Open Cell Units