I am recovering from an L4-5 lumbar back infusion. It has now been almost 6 months, and the pain continues down my legs an into my BOTH total knee replacements. I am about 50 pounds over-weight, and wondering if that is my only answer to get rid of the pain. I love to exercise, but haven t for several months. I am not to take NSAIDS, due to the fact, it could damage my kidney functioning. Tylenol Extra Strength does not help me. What other options do I have for pain relief. My back surgeon says my x-rays look good, but I have a tremendous amount of arthritis. Carol B.