Yes, I've had the same problem. Developed OA in both knees originally and from there over a fairly short time had ankle, toes, shoulders, elbows, wrists and fingers and thumbs all succumb to arthritis and tendon damage. Had injections in both knees, both shoulders, one wrist and probably need have them in my thumbs. All this is visible on MRI, CT etc.

I had to start on 60mg of prednisone when I suddenly started with PMR and pretty much all my OA pains and swollen knee cleared up a huge amount.

As I'm tapering down the prednisone, now on7mg, all the previous problems are slowly returning. Knees, ankles, toes, shoulders, elbows, wrists, fingers and thumbs are almost back to how they were before. So prednisone definitely helps OA in my experience.

If your rhumatologist doesn't see the connection he needs to find some other line of work. My rhumatologist told me when I first started on prednisone that it will make "everything" better. I soon realized she was right. Pity it will never get rid of the OA. I think it just does a good job of helping with the pain and inflammation but I really hate being on it for the way it makes me feel so ill.

I really hope you find a good solution.