Evolving treatment of popliteal artery aneurysms.

BACKGROUND

Over the past decade, the treatment of popliteal aneurysms has evolved at our institution from sole operative intervention during the initial part of the study period, to combined surgical and endovascular treatment, and finally to endovascular-centered management in more recent years.

METHODS

This is a retrospective review of all patients with popliteal aneurysms treated at our institution from 2001 to 2011. Data collection included the indication for intervention, treatment details, interventional patency, limb salvage, perioperative outcome, and midterm survival.

RESULTS

Eighty-eight aneurysms (72 patients) were treated during this period. Indications for intervention included symptomatic presentations in 53% (n = 47) and asymptomatic in 47% (n = 41). Treatment included endovascular exclusion in 24, surgical repair in 63 (14 posterior approach and 49 medial approach with bypass and exclusion), and primary amputation in one patient. Nine aneurysms (10.2%) received catheter-directed thrombolysis. Demographics were similar between the two treatment cohorts, except for age with endovascular stenting patients being significantly older (76.0 vs 66.0 years; P = .002). The mean length of stay was 3.9 days vs 9.5 days (P < .001), favoring endovascular treatment. There were no perioperative (30-day) deaths in the endovascular group and one in the surgical cohort. The mean patency follow-up was 21.2 vs 28.3 months. Primary patency did not differ between endovascular and surgically treated patients at 1 year (92.9% vs 83.3%; P = .26) and 3 years (63.7% vs 77.8%; P = .93). No limbs were lost in the endovascular group during the follow-up period of 22.4 months, and one late limb loss occurred in the surgical cohort (mean follow-up, 29.2 months). Endovascular patients had a midterm survival rate of 65% (mean follow-up, 33.9 months), whereas surgical patients experienced a survival rate of 80.8% (mean follow-up, 42.9 months; P = .22).

CONCLUSIONS

Endovascular treatment of popliteal aneurysms provides similar short-term patency to that of the traditional gold standard approach with surgical bypass, with shorter hospitalizations in both symptomatic and asymptomatic patients. Further long-term follow-up is required to compare these two treatment modalities for durability to determine the optimal popliteal aneurysm management.