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A member asked:
My knee is painful it swells up and goes red and will crack when i straighten it. also it can give way when walking i did injure it 16 years ago.
A doctor has provided 1 answer
Numerous conditions: Cracking is most often benign - if there is grinding with the cracking it could indicate arthritis behind the knee cap. Numerous conditions could cause pain and swelling and giving way, such as meniscus injury, ligament injury, patellofemoral arthritis, patellar misalignment, etc, so unfortunately you'll need to see a doctor to get a better diagnosis.
Answered 9/17/2014
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