I know Dr. Hayes has long since retired, however I hope this makes its way to him. In 1991, he did my first knee surgery. I had endured about 6 years of both my knees spontaneously dislocating, each time, more and more damage was done. I'd never participated in sports as these dislocations occurred just simply walking. After the first surgery, Dr. Hayes relayed to my Mom that he was shocked at how much damage he'd found. The next summer vacation, I had my 2nd knee done, Dr. Hayes had asked me if I was physically active. I told him no and he said it was lucky, but he did the best he could with what he had to work with. Fast forward many years. I took up running in my mid 30's, while it has been tough, I've been thankful I can do it! Thanks to Dr. Hayes' skill many years ago, I am able to participate in endurance running with knees that can run ultra marathon distances (more than 26 miles). Many thanks Dr. Hayes!