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  • Title: Outcome of endovascular repair of popliteal artery aneurysm using the Viabahn endoprosthesis.
    Author: Garg K, Rockman CB, Kim BJ, Jacobowitz GR, Maldonado TS, Adelman MA, Veith FJ, Cayne NS.
    Journal: J Vasc Surg; 2012 Jun; 55(6):1647-53. PubMed ID: 22608040.
    Abstract:
    OBJECTIVE: This study reviews a single-center experience of endovascular popliteal aneurysm (PAA) repair. METHODS: A retrospective review was performed to identify all endovascular PAA repairs performed between September 2004 and January 2011. RESULTS: We identified 21 patients (mean age, 74 ± 9 years, 91% men) with PAAs (mean size, 2.89 ± 1.0 cm) in 26 limbs, of which 38% were symptomatic. All patients underwent endovascular repair with a Viabahn covered stent graft (W. L. Gore & Assoc, Inc, Flagstaff, Ariz). Postoperatively, all patients were maintained on antiplatelet therapy with clopidogrel or aspirin, or both. Mean follow-up was 22 ± 17 months (range, 1-57 months). One patient with one aneurysm was lost to follow-up. Primary and secondary patencies were both 91.2% at 1 year and were 85.5% and 91.2%, respectively, at 2 years. The limb salvage rate was 100%. Four stent graft failures occurred at a mean of 12.3 ± 11 months. One technical failure due to stent graft infolding required conversion to an open femoral-popliteal bypass. Three additional graft failures occurred in patients with poor (single-vessel) runoff. Compared with patients with two- or three-vessel runoff, the graft failure rate in patients with single-vessel runoff was statistically significant (P = .02). Two of the graft failures were successfully treated with open thrombectomy, and one required a tibial artery bypass for limb salvage. CONCLUSIONS: Endovascular repair of PAAs is feasible and has acceptable midterm patency rates. Poor distal runoff predicted graft failure.
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