A study shows that you can regrow knee cartilage. The technique used in this study spurs knee cartilage to grow back, which could cut pain and improve knee function, wrote Kevin Stone, MD, and colleagues.
Stone's study appears in The Journal of Arthroscopic and Related Surgery.
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No! As we grow older many peoples cartilage becomes thin. When this happens our bones rub against eachother and becomes very painful. If this happens you must go to your doctor and consult it to him or her A.S.A.P!!! And they will fix it surgically.