I was thinking of a wound severe enough to have an impact on the character. But being that this is ten years after the events of the series, the character physically would mostly be recovered. Or advances in medical technology could've helped the character?
This is why I asked, so that I can establish my limits. I'm not going to go and make a character that doesn't make any sense. If I do make a character with some sort of life-changing injury in their background, I'd make it work.