Surgery Photo (IMAGE) MediaSource Caption Dr. David Flanigan performs the first surgery in the U.S. to implant the Calypso Knee System into the knee of a patient with osteoarthritis at The Ohio State University Wexner Medical Center. A clinical trial is examining the device's ability to relieve pain and slow joint degradation. Credit The Ohio State University Wexner Medical Center Usage Restrictions All multimedia is available for free and unrestricted media use with a courtesy to The Ohio State University Wexner Medical Center License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.