Yeah, I know of one person who has had something similar done but it was because of a problem with one of his legs not growing due to a football injury. I can't see it being something I would so cosmetically though.
I've been lucky enough not to have any major bone breaks in my life, not about to pay someone to give me my first...two. I don't know, I just picture some nurse out of Stephen King's "Misery" smashing me up...except she's chinese, and short.