Catrin you have had more than your share of "stuff" happening to your body this year. I'm really curious to know more about what you find out about the arthritis.

I apparently have severe arthritis at L4-L5 but none in my hip. It has only hurt sporadically, but has gotten noticeably worse recently.
I wonder if my unstable hip issues are related to the arthritis in the back. No mention was made of the SI joint, but I think there is something there too. My symptoms have affect my hamstring, IT band and various other spots, as well as my hip. I have been procrastinating about getting back to a doctor- I really hate taking time off from work (lesson plans, substitutes, etc).

Anyway- keep us posted and I hope you find good solutions. Like you, without the bike I have trouble getting cardio and keeping my weight down.