Thanks for writing your query
The description given by you is suggestive of arthritis
that is roughening of joint. These all are technical words please do not go by them.
My advice would be -
1. Gentle exercise along with hot water fomentation with pain killer on SOS basis and wrist brace.
2. Dietary supplement like glucosamine
may be taken.
If the suffering remains then one may choose the option of joint fusion (arthodesis) after discussion with your local doctor.