Elective popliteal aneurysms: does venous availability has an impact on indications?

Area of Science:

• Vascular Surgery
• Biomaterials Science

Background:

• Popliteal aneurysms require careful management to prevent limb-threatening complications.
• Treatment decisions for small, asymptomatic popliteal aneurysms are debated, especially when autologous vein conduits are unavailable.

Purpose of the Study:

• To compare the patency and limb salvage rates of venous bypasses versus prosthetic bypasses for popliteal aneurysms.
• To inform treatment strategies for small, uncomplicated popliteal aneurysms when a venous conduit is not readily available.

Main Methods:

• Retrospective analysis of 100 popliteal aneurysm repairs over 18 years.
• Comparison of outcomes between 80 venous bypasses (Group I) and 20 prosthetic bypasses (Group II).

Main Results:

• Prosthetic bypasses (Group II) had significantly lower primary patency (61.5%), assisted primary patency (89%), and secondary patency (88.4%) at 2 years compared to venous bypasses (Group I: 94.3%, 97.3%, 98.7%).
• Late arterial complications were more frequent with prosthetic grafts.
• Limb salvage rates were comparable between venous and prosthetic grafts (98.7% vs 100%).

Conclusions:

• Vein grafts are associated with a lower risk of late occlusion compared to prosthetic grafts for popliteal aneurysms.
• The availability of a suitable vein conduit should be a primary consideration when deciding on the surgical approach for small, uncomplicated popliteal aneurysms.