Welcome Katerine - I don't post as often but read alot. its a really great forum and I agree with the eyes glazing over syndrome. The minute I start talking about riding or the Tour I put people to sleep!

I don't have any advice at all but I also suffer from arthritis - mine is in one of my ankles due to an old injury and I'm really struggling with it this year as I get back in the saddle and really hurt after riding - not sure if it has to do with clipping in and out. I also have issues with tennis elbow which breaking, shifting, and drinking from my water bottle REALLY hurts. I can't imagine how tough it must be for you. So sorry!

Hang in there and please let us know how it goes finding your new bike.