A retrospective review of 156 reconstructions performed for femoro-popliteal arterial occlusive lesions in 141 patients was carried out in terms of the reconstructive procedure and the degree of out-flow in the distal vessel. The cumulative patency rate for 95 autogenous vein grafts was 60.7 per cent at 12 years and higher than the 27.4% patency rate for 50 endarterectomies (p less than 0.001). All of 11 synthetic bypass prostheses failed with late thrombosis within 3 years after operation. The cumulative patency rate in cases with good distal run-off vessel and those with fair distal run-off vessel were 77.1% at 11 years and 57.3% at 12 years, respectively, and these values were significantly superior to 10.3% in cases with poor distal run-off vessel. The patency rate for 41 in situ grafts was 72.2%, being superior to 65.5% for 42 free grafts.
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