Stiff, achy knees? Lab-made cartilage gel outperforms the real thing

A hydrogel-based implant could replace worn-out cartilage and alleviate knee pain without replacing the entire joint. Credit: Benjamin Wiley, Duke University. Over-the-counter pain relievers, physical therapy, steroid injections—some people have tried it all and are still dealing with knee pain. Often knee pain comes from the progressive wear and tear of cartilage known as osteoarthritis, … Read more