When I was in college (University of Wisconsin), a guy on our fencing team got run through with an epee. He was lunging forward for a thrust during practice, when the other guy (who happened to be his brother, IIRC), hit him on the top of the shoulder. The safety guard on the top of the epee popped off, and the blade went straight in....all the way down his back, with the tip of the epee exiting the body at his right butt-cheek.
Amazingly, it was a subcutaneous injury the entire way...it'd basically made a tunnel through his skin. They pulled out the weapon, flushed out the wound, sealed up both ends, and sent him on his way.