Hi Paul,
I would agree with Suzanne. OA and RA are not synonymous with one another. OA being very much age related/ injury related.
However, once you develop RA your OA can become more troublesome, to the point of not knowing which
is the presenting problem.
The mechanism's associated with one are very different to the other.
OA can be, and is, a very debilitating disease, sadly not helped by steroids which can be a god send to us when we have a 'flare' .
All of us whoever we are and whatever illnesses we have, will develop some OA during the course of our lifetime, it may not
be troublesome, but we will develop wear and tear.
Gogs