Fig. 1.

( a ) Three-vessel run-off is present below the knee of a patient before angioplasty of a thrombosed superficial femoral artery stent. ( b ) After revascularization of the SFA stent, thrombus is present occluding the previously patent tibioperoneal trunk. ( c ) After catheter-directed delivery of 2 mg of intra-arterial tPa, thrombolysis has occurred and three-vessel run-off has returned. The arrow indicates residual arteriospasm at the site where the thrombus had lodged in the posterior tibial artery.