Femorofemoral crossover bypass for noninfective complications of aortoiliac surgery.

Between 1973 and 1989, 39 femorofemoral crossover bypasses were performed to treat unilateral noninfective complications of aortoiliac surgery. The initial revascularization procedure, performed an average of 79.5 months previously, was an aortobifemoral bypass in 29 cases, an aorto- or iliofemoral bypass in six cases, an inlay graft for abdominal aortic aneurysm and aortoiliac endarterectomy in two cases each. The indications for femorofemoral crossover bypass included prosthetic occlusion in 35 cases, thrombosed false aneurysm in two, and further degradation after endarterectomy (iliac stenosis and occlusion in one case each). There was no operative mortality. One patient with acute ischemia upon admission and another with distal gangrene required below-knee and forefoot amputations, respectively. No amputations were required during the rest of the follow-up period. Three repeat aortobifemoral bypasses were performed because of occurrence of aortic or inflow vessel lesions. Primary and secondary actuarial five year patency rates for femorofemoral crossover bypasses were 59.7% and 78.4%, respectively. Femorofemoral crossover bypass can extend the benefits derived from direct aortoiliac surgery with low mortality and morbidity in the absence of associated aortic pathology (false aneurysm at the aortic implantation site or severe obstructive lesions).