Originally Posted by Excelsior.
There is a single panel that shows him in the surgery bed in the last chapter with Alfred assuring "he'll live". Needless to say, this is far more than the utter neglect of Rises after he gets his braces.
I could have sworn the surgery bed bit was in the first chapter when he was investigating Two Face.
And, I don't see it as neglect, I see it as symbolism. The brace is used by Bruce to quickly become Batman, a quick fix. Batman was a quick fix for Bruce to conceal his pain instead of moving on. It's discarded and forgotten as Bruce learns to live as Bruce Wayne instead of Batman.