I’ve heard far more good than bad though I suspect you may find the physio tougher with the RA. I’m scheduling to have mine done first part of next year because of arthritis. In about five to ten years I suspect they will have the stem cell regeneration option much more sorted out for knees. At the moment there is a 50/50 chance of success and it’s hellishly expensive. I’m not going to hang around waiting for it.

All the very best for this Hazza. Let us know how you get on.