Fig. 2.

Visual tools, such as the Society for Vascular Surgery Wound, Ischemia, and foot Infection (WIfI) classification smartphone application, shown here in use with a critical limb ischemia patient in clinic (a) and as a screenshot (b) , are very useful for improving a patient's understanding of their condition, the associated risk of amputation, and the potential benefits of revascularization. ^{15 16}