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Hi, this is Dr. Hill. I am so sorry that Liam is going through this. Unfortunately, once the tissue is cold and becomes necrotic (no blood flow, odor, oozing fluid) then there is not any way to salvage. Is it the whole leg, just the foot or a few toes that are discolored and cold? Did they place a Doppler probe to evaluate for blood flow? If the whole foot or limb is not affected then you can decbride (remove) the dead tissue and let the rest of the tissue declare its viability over a few days. Wet to dry bandages are required with daily changing to evaluate the tissue. Please feel free to post pictures and additional questions. Have they discussed amputation?