Unfortunately, there is no proven remedy yet for slowing progression of osteoarthritis other than weight loss. But I am betting that you are not overweight, so that doesn’t help. I am also assuming that osteoarthritis is the type of arthritis that you have. I wouldn’t put off the knee replacement surgery if you are very symptomatic. Getting 20 good years post-knee replacement is pretty good compared to 30 years ago when the surgery started. Then, you could only expect 10 good years. Plus, the revision surgeries are now very successful, too. Recovery from knee replacement surgery is also much quicker and less painful than in the old days. I would agree with your doctors to go ahead with it. good luck !!