Hi cfg,
I had the same surgery as you for the UC (have a jpouch now). I know how you feel...you went through all that and so your health issues should be done with. Unfortunately, there is a link between colitis/crohns and joint issues. I had my colon removed when I was 15, with 2 more surgeries a year later and in my early 20s, I started having back and joint pains. After seeing many doctors, a rheumatologist diagnosed me with sacroiliitis. I have been checked for ankolysing spondylitis and am monitired for it, but so far, don't have it. You should try and get yourself to a rheumatologist to see what's going on and how to best treat it. (I know...who wants to go on more meds). Good luck.