When McCain’s plane crashed in Vietnam, both his arms were broken and he also broke a leg..He was beaten by the mob who fished him out of the water and they crushed one of his shoulders and bayoneted him in the foot and abdomen..Then he was thrown in prison and went a month without treatment until the North Vietnamese found out his father was a Rear Admiral in the Paciffic Fleet..They then sent him to a Chinese hospital for treatment..To this day he is unable to completely raise his arms..
See Wikipedia article on John McCain:
http://en.wikipedia.org/wiki/John_McCaine