@vivsterb Thanks for your reply! After reading your post, I have decided to ask my PCP to send me to a Rheumatologist. And yes, I will post again when I find out something. I don't get my stress test until next month. I don't anticipate any problems, but it will be good to know for sure. I really appreciate the advice and support from the Mayo Clinic site. I had double knee surgery July 1st last year and the information and support I got from this site was invaluable.