Jeweller credits his ‘agile’ fingers for being able to tie knots in arteriesA man with no medical training managed to save a young woman's life when both her legs were severed by a train and he tied the protruding arteries of her legs into knots. The woman was reportedly hoping to spend Sunday night under the stars with her boyfriend as they jumped onto a slow-moving freight train near Jonquiere, northeast of Quebec City. According to authorities, the 20-year-old woman lost her footing and fell under the wheels.