You are so very kind to reply...thank you so much! I don't know what MSUS is. My pain began with a severe kidney disease that was treated & cured...then 2 months later was told I have Waldenstrums..there was no evidence before then & I had all kinds of tests, scans, etc. Do you know anything about injections into the back to help the arthritis? A pain management doc recommended I try this procedure...I am unsure that will help! I don't know if the pain is from cancer, arthritis or a fracture I have cancer on my spine (L2 & L3( caused by the cancer...what I do know is the pain is severe every day...worse when I first awake & then eases..but always pain! Thank you so much!