Have you talked to your doctor about it?
It's typically treated with rest and sometimes ice for as much as a few months. There may be exercises that you can do as well to prevent it from happening again. In most people, the rest is enough to get rid of the problem. Usually, when the problem persists and even gets worse, it is because the person is not resting like they should be. If you are physically active, you might not want to rest that knee for a few months, but a few months of inactivity is a lot better than being in pain for the rest of your life.
"In most people, Osgood-Schlatter disease goes away on its own with a little rest and time. If your child ignores or plays through the pain, the disease may get worse and may be more difficult to treat."
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