We are NOT vets, we have no medical background but it was either do what we could for this bird or the infection would surely take his life.
So to make it short and less graphic we amputated behind his broken bones and cauterized the open skin. The bleeding was very minimal i think because the skin and meat were dying in that area already.
Not to seem rude or anything, but you amputated his wing YOURSELF and you have no medical background and are not a vet??? I'm glad he is doing better now, but you'll have to forgive me if I find this to be a little sketchy.