10/23/2026
Columbia Dental’s Chang H. Lee, PhD, professor of craniofacial engineering (in dental medicine) and director of research at Columbia’s College of Dental Medicine, is helping develop a “living knee” implant, and the project just earned a place among TIME’s Best Inventions of 2026!
A co-principal investigator on the project, Dr. Lee is applying his research on repairing damaged jaw joint tissue to the knee. His work focuses on directing the body’s own stem cells to damaged areas to help regenerate cartilage.
The multidisciplinary effort is co-led by Columbia’s Clark Hung and Nadeen Chahine, alongside University of Missouri collaborators led by James L. Cook. The team is developing a 3D-printed knee joint made from a biodegradable scaffold infused with stem cells, designed to regenerate a patient’s cartilage and bone as the scaffold gradually breaks down.
Read more in TIME’s Best Inventions of 2026 here: https://bit.ly/4dGBAaw