One of Dr. Roger Härtl's patients, boxer Danny Jacobs, was recently featured in a TV ad for NewYork-Presbyterian Hospital. Danny's career was threatened by a tumor that had wrapped around his spine; some thought he would never walk again, let alone fight. But thanks to Dr. Härtl's surgery, Danny not only recovered his health but also his abilities in the ring, and in August 2014 he earned a world championship at the Barclays Center in Brooklyn. Watch the video to hear his remarkable story.