This is a non-randomized prospective study of 30 patients scheduled to undergo lower extremity amputation (below the knee, through the knee or above the knee) evaluating bone perfusion and viability using indocyanine green (ICG) fluorescence imaging at several steps during surgical procedure. The data collected in this study will inform the development of methodology and thresholds around providing surgeons with objective data regarding critically injured bone in the setting of musculoskeletal trauma and/or bone infection. This will improve our management of and decrease variation associated with management of these disabling conditions.
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