It is most likely RA NODES. They are permanent and you need to alert your rheumatologist as it may mean your disease is not well managed.

I have small knots or nodes just below my left knee and on the insde also down above ankle. Could be tendonitis?

T have them on heel and side of left foot RA doctor side it's from RA and he checks it out every visit if they get bigger than they have to remove them if painful.

Happy Birthday CaryGray i hope you have an awesome day. I have had days that i would be hit in all joints at once it might last one day or a couple. just remember life is hard its harder when you give up.

Like cramping try a spoonful of brown mustard or yellow mustard I had my Primary Care Physician tell me about taking that for cramping