I had already been having a problem with my sternum/clavicle joint, before my Tx, and my mother also has an arthritic bump in the same area, so I did think my shoulder pain prior to Tx may have been RA related, but didn't look into it.
Once on Tx, I began to have joint pain, in the hip and knee. It would come and go, and it was accompanyed by muscle weakness in my legs, and I had trouble walking. After Tx, it went away, for the most part.