I had been in pain for over 10 years with my knees and constantly on pain medication. I am a musician - performing for events on keyboard and vocals, standing at the keyboard leading my band. At the end of every performance I was in terrible pain. When I got home each evening I was limping and could not sleep without pain killers. I went through the knee injections, physical therapy etc. In January 2013 Dr. Marx replaced my right knee and in January 2014 Dr. Marx replaced my left knee. I have been free of pain for the first time in over 10 years, have more energy than I did 10 years ago, and have eliminated taking any pain killers. Hospital For Special Surgery and Dr Marx has been a life changer for me. I have no limitations. I am back to performing more than ever thanks to Dr. Marx and Hospital for Special Surgery . I have become a supporter of Dr. Marx and Hospital for special surgery tell friends who have knee problems what I went through and how fantastic I am now.