Re: Worried about knee
I agree - probably fat.
Another alternative could potentially be scar tissue if you are having a lot of pain in the knee, I know for something like a torn ligament scar tissue will build to try and stabilize. Nothing dangerous, just your body's reaction to keep you up and moving.
I agree, if you're bothered ask a doctor. It would give you peace of mind and perhaps they can help you sort out the pain.
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