Lower Extremity Bypass.

The original description of the lower extremity bypass (LEB) provided surgeons with a reliable method of limb revascularization. The tenets of the operation have formed the foundation for the advances of surgical care. A careful evaluation of the chronic limb-threatening ischemia patient due to the numerous comorbid conditions is paramount to obtain the best possible outcomes. Use of all adjuncts including judicious target vessels control, completion imaging, and vein harvesting techniques to ensure optimal outcomes because a functioning LEB remains a key to successful limb salvage.