The posterior approach for repair of popliteal artery aneurysms.

Abstract

Ligation and bypass is the most commonly performed surgical treatment for popliteal artery aneurysm. This approach can be complicated by persistent collateral flow to the excluded aneurysm sac, which may lead to aneurysm growth, the development of compressive symptoms, and in some cases, rupture. Repair of popliteal aneurysms by posterior endoaneurysmorrhaphy and reconstruction with a short prosthetic interposition graft avoids these complications because patent collaterals communicating with the aneurysm sac are oversewn at the time of surgery. We report the early and mid-term outcomes of popliteal artery aneurysm repair using this posterior approach. The records of all patients operated on for popliteal artery aneurysm from December 1981 to June 2003 were retrospectively reviewed. Patients who underwent popliteal artery aneurysm repair with a posterior approach were included in the study. From 1981 to 2003, 30 popliteal aneurysms (mean diameter, 3.2 cm; range, 1.9 to 6.2 cm) were repaired in 24 patients using a posterior approach with interposition prosthetic grafting. The median follow up was 21.5 months. Primary patency, primary assisted patency, and secondary patency were 92.2%, 95.8%, and 95.8%, respectively, at 1 and 2 years. The limb salvage rate was 100%. Popliteal endoaneurysmorrhaphy using a posterior approach with interposition prosthetic grafting is simple, safe, and effective. The patency and limb salvage rates are equivalent to those obtained with ligation and vein bypass. In addition, the posterior approach eliminates the postoperative complications associated with persistent collateral flow into the aneurysm sac.