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« Last post by hernanu on Today at 07:52:26 AM »
Sometimes it's tied to overuse, chuck. There are several reasons why you could have it, but one is if your muscles supporting the knee are not strong enough for what you're asking.
The best thing is probably to see your doctor to eliminate some possibilites - infection is one that you want to clear your mind about.
Since you're very active (as many of us are, and remember I'm not a medical person), then you're pushing muscles that are not totally used to it. Did you ice it?
Try rest and ice, but if that doesn't respond, I'd get your doctor involved. Doesn't sound like something with the hip, other than the OA weakened your muscles.