Scaffold 2 (IMAGE) Rice University Caption Rice University graduate student Sean Bittner holds a sample of a 3D-printed scaffold that may someday help heal osteochondral injuries of the kind often suffered by athletes. The material mimics the gradient structure of cartilage to bone found at the end of long bones. Credit Jeff Fitlow/Rice University Usage Restrictions None 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.