Don't know if this workout will be of interest. It comprises 4 movements - probably not for those with arthritis - the hard one being full squats, but since we do modified squats in PR so we could substitute those instead.
The workout targets (or increases, my language probably isn't right!) the nitric oxide in our joints which helps oxygenate both them and our organs.
I can do full squats now after a lot of practice work, usually needing oxygen to do them without desaturating. But won't be doing them for a while as I just fell off a ladder painting the kitchen and damaged ankle Lots of arnica cream and tabs and possible visit to the minor injuries unit in a bit, depending on how it goes on. No swelling so hopefully nothing broken.