First, I have family members who suffer from varied types of arthritis. Wish all of you the best in diet management, pain management, and the hope for improvement. The cocktails of prescribed meds all interact and do who knows what to your other body parts.
As you mentioned, nutrition and diet may well be quite involved with arthritis. And todays fad diets are likely not very helpful with their absolutely unbalanced approach to nutrition. I have a couple of links on my profile page that might be interesting.
Has anyone tried cetyl myristoleate? I've seen some research that suggests it may help with some forms of arthritis. There are others who post that tell a negative side to CMO which is generally an opinion of a lack of real results. Here's a link to a site with info about Pro Vida Flex - http://www.prostarnutrition.com/24974/4031.htm