Depends how severe it is, there's varying degrees of arthritis, from the sort that gives you muscle twinges on cold morning to ones that can cripple you with constant pain.
At the moment, there isn't a vast amount that can be done, it's really business as normal until the situation develops into something that can be treated, there's certainly no point operating on someone until they need an operation, Doctors would often consider that an unnecessary procedure, and therefore an unnecessary risk. Doctors are held directly responsible for anything that goes wrong in an operating theatre, particularly in the US, and that's creating a generation of Doctors and Surgeons who are becoming more and more unwilling to operate unless they absolutely have to.