Intermittent claudication results from relative ischaemia of the muscles in the lower limb brought on by exercise. The ischaemia is usually due to obstruction of the femoral artery as a result of atherosclerosis. The ideal treatment of this condition is the removal of the obstruction, either by thrombo-endarterectomy, or by arterial reconstruction. Watt et al.' reported excellent results following arterial surgery in a highly selected series of relatively young patients. They achieved a high patency rate (95% on discharge, 60-70% in 5 years) with insignificant operative mortality but, in many patients with intermittent claudication, either poor general condition or unfavourable local vascular condition, precludes surgery; in Taylor's' series, only 63% of limbs were suitable for direct arterial surgery.