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Lower Extremity Arterial Disease in Sports

Laboratoire d'explorations vasculaires et de medecine du sport, Centre hospitalouniversitaire

Jean-Michel Chevalier, MD

Service de chirurgie vasculaire, Hopital H Herriot, Lyon, France

Georges Leftheriotis, MD

Laboratoire d'explorations vasculaires et de medecine du sport, Centre hospitalouniversitaire

Jean-Louis Saumet, MD

Laboratoire d'explorations vasculaires et de medecine du sport, Centre hospitalouniversitaire

The recent description of exercise-induced intimal fi brosis affecting mainly the iliac artery (and therefore usually described as external iliac artery endofibrosis) has dramatically changed the diagnostic approach of unexplained recurrent lower limb exercise pain, espe cially in cyclists. Because arterial disease is often as sociated with the aftereffect of various concomitant musculotendinous lesions, several months may pass before an arterial origin is suspected. The arterial origin of the pain must not be eliminated on normal ankle-to- arm index or normal Doppler velocity profiles at rest. Ultrasound examinations taken at rest may show the lesions in 80% of endofibrotic patients and allow for the diagnosis of popliteal entrapment syndrome during dorsiflexion of the foot. However, the hemodynamic consequences of a stenosis on the aortoiliofemoral axis can only be proved by measurement of the ankle- to-arm index after exercise. A cutoff of this index <0.5 provides an 85% sensitivity in the detection of endofi brosis. Invasive investigations (arteriography or an gioscopy) will confirm the diagnosis before surgery is discussed. Although long-term results in endofibrosis are unknown, most of the surgically treated patients return to competition.

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