Evaluating The Use Of Glass, Wifi And Mac Scores As Predictors Of Limb Salvage Success In Patients Receiving Free Tissue Transfer For Chronic Lower Extremity Wounds

Abstract

The WIfI (wound, ischemia, and foot infection), MAC (medial arterial calcification), and GLASS (global limb anatomic staging system) grading scales have recently been adopted by the Society of Vascular Surgery as predictors of amputation rates and failure of revascularization in patients with chronic limb-threatening ischemia (CLTI). However, these metrics have not taken into account the ability of free tissue transfer (FTT) to shift these outcomes. This study seeks to characterize whether the addition of free tissue transfer can facilitate limb salvage in patients who would otherwise be deemed as high risk for failure using these grading systems.