The posterior approach to popliteal-crural bypass

Area of Science:

• Vascular Surgery
• Reconstructive Surgery

Background:

• Critical limb ischemia (CLI) poses a significant challenge, often requiring revascularization procedures.
• Traditional bypass approaches for infrapopliteal occlusive disease can involve complications and may compromise the great saphenous vein.

Purpose of the Study:

• To evaluate the feasibility and outcomes of a posterior approach for popliteal-crural bypass surgery.
• To assess the efficacy of this technique in patients with limb-threatening ischemia.

Main Methods:

• A posterior surgical approach was utilized in 21 patients with CLI, performed in the prone position.
• Lesser saphenous vein grafts were employed, with a novel exposure of crural arteries via the vein harvest incision.
• The study period spanned 24 months, with detailed recording of inflow/outflow sites and distal anastomosis locations.

Main Results:

• The majority of patients (81%) had diabetes mellitus and presented with severe ischemia (rest pain, ulceration, gangrene).
• The posterior approach yielded successful outcomes, with significant improvement in toe-brachial pressure index (0.20 to 0.77, p=0.001).
• High graft patency rates (88% at 6 and 12 months) and limb salvage (90%) were achieved with minimal wound complications.

Conclusions:

• The posterior approach to infragenicular occlusive disease is a durable and effective alternative to conventional methods.
• This technique spares the great saphenous vein and facilitates proximal crural artery exposure.
• It also minimizes wound healing issues often associated with standard surgical approaches.