The ends of bones are soft, so they must be covered with a thick white gristle called cartilage. Once damaged, cartilage can never heal. When knee cartilage is damaged, the person spends the rest of his life losing more cartilage until it is completely gone and the knee hurts 24 hours a day.
If only a small area of the cartilage is damaged, it may be treated with cartilage extracted from your own body. (If cartilage is taken from someone else, your immunity will try to kill it, but it does not try to kill your own cartilage.) Your extracted cartilage is grown in special culture dishes and then injected into a hole in your own cartilage and secured in place. This procedure works very well if you have only a small piece of cartilage missing. The doctors just fill the hole. However, unless they can enclose the entire area for the donor site, the cartilage will not stay where it was put and will not be beneficial. That is why this procedure cannot be used to treat a cracked cartilage in the knee. Remember they have to cover the articular surface that meets the cartilage from the other side of a joint.
When all the cartilage in your knee is gone, the only effective treatment is to replace the whole knee. Knee replacements are now lasting for twelve to twenty years or more, and most remain pain-free.
If you have damaged cartilage in your knee, you should protect that knee for the rest of your life. Running, fast walking and jumping cause further damage, while pedaling and swimming usually do not. When the knee hurts all the time, your doctor will check to see how much cartilage is left. If it’s gone, you probably need a knee replacement.
Sports medicine doctor, fitness guru and long-time radio host Gabe Mirkin, M.D., and his wife, nutritionist Diana Mirkin bring you news and tips for your healthful lifestyle. A practicing physician for 50 years more
The Good Food Book
FREE! The Good Food Book: Live Better and Longer with Nature’s Best Foods, by Dr. Gabe Mirkin. With 100 of Diana Mirkin’s delicious, healthful recipes and lists of foods you can eat anytime.
Unable to fetch the feed Error :
A feed could not be found at http://www.facebook.com/feeds/page.php?id=200757859968159&format=rss20. A feed with an invalid mime type may fall victim to this error, or SimplePie was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.