lidlicker - I managed to break an obscure bone in my wrist just before last Christmas. Long story, this Summer another X-ray (following a lot of pain) revealed that it had healed but that considerable arthritis had set in. This was aggravated by accompanying inflammation.
I should say that I have had 2 hip replacements and have arthritis in most of my spine, so I'm fairly bomb-proof by now. I went to see my new (UK) G.P. because of pain - I was living in France before - and she referred me to a specialist who injected anti-inflammatories into the wrist joint a few weeks ago. It wasn't as painful as all that and he numbed the site beforehand so don't be put off.
It was fairly sore for a few days afterwards, now it's fine unless under stress. I will have a follow-up assessment in 2 months. Apparantly some people don't need any more treatment, some need further injections and a very few need further, possibly surgical, interventions.
I certainly won't fear or hesitate to have any more injections if necessary.
Hope this helps :)