I'm a 66 yr old female, normal weight. Had a total knee replacement six months ago because of a torn ACL, torn meniscus and arthritic knee. The pain is now worse than before I had the replacement surgery. My knee is always swollen, stiff and hot to touch since surgery. I have taken Celebrex that helped the pain but had to stop because my kidney function BU/CU ratio is now elevated. I cannot take other NSAID's because they elevate my blood pressure. I have a history of chronic Lyme disease. I was treated two years ago with six weeks of Rocephin IV Therapy. Could the Lyme disease have settled in my my new knee post operatively? Any suggestions for some relief would be greatly appreciated.