In 2018, Chapel Hill resident, William Hennen, 56, was anxiously looking for a cure. Debilitating, constantly throbbing pain in his right knee had caused him to walk with a noticeable limp and impaired his ability to drive. “The pain was very high – 10 out of 10 at times,” he recalls. He was evaluated by Dr. Buchheit, and deemed to be an appropriate candidate for the Duke Autologous Serum Program. Three months later, he was able to discontinue the use of painkillers and take a hiking trip to the National Parks out west with his wife with little to no pain. “After a few months, I forgot all about how much pain I was in. The pain was eliminated,” says Hennen, adding that his knee has been pain-free for more than a year.