But that new cartilage tended to be fibrous rather than the native smooth stuff in knees called “hyaline” cartilage. It broke down quickly.

Cartilage cells generate more protein components (collagen II and aggrecan) for regeneration when treated with fast-moving dancing molecules (left) compared to slower moving molecules ...

Researchers at TU Wien have developed a new way to grow cartilage from stem cells and guide it into basically any shape required. The breakthrough could lead to better ways to patch up injuries.

Scientists say they've identified a new type of cartilage — one that was actually discovered in the 19th century, forgotten, rediscovered and then forgotten again.