I saw my rheumatologist last week and told her about it. Her advice was wearing a splint and she had some blood work done and x-rays taken, but there were neither any inflammations nor fractures found. That was a good sign. It didn't show or solve the problem though.
What it did show on the x-rays was that my RA had progressed severely since 2003 and she recommended seeing a hand and wrist specialist. I am having mixed feelings about that. My hands and wrists don't bother me at all and I suspect all he will do is suggesting surgery.
I can already tell you right now that would be a big NO on my part. Surgery would be the last resort and I would only agree to that when my hands or wrists would be hurting constantly and/or severely limit my mobility.
The splint is helping a little and I did make an appointment with the specialist, but only with the hope he can do something about my ailing tendon or tell me what to do or not to do. In the mean time I am taking it easy and decided to give it to God and not to worry about it.
He knows best!
Therefore do not worry about tomorrow, for tomorrow will worry about its own things. Sufficient for the day is its own trouble.