Re: knee replacement surgery. Marling: Don't let them tell you you're too young for the knee replacement, if your neurologist thinks you should have it. If you need to have it done go ahead and do it. I have a friend (non-PD, age 51) who has had 2 hip replacements, one in 1996 & the other in 1998. He feels great and has had no problems. Another friend, with arthritis, had knee replacement at age 48. Again, with no problems. I have been having problems with my right knee (my PD side) for several months. Medications haven't helped at all. Originally, I had torn a ligament in the knee about 10 years ago and it healed fine. I believe it has something to do with the PD because I also developed carpal tunnel syndrome in my right wrist and synovitis in my right hand. I had surgery on my hand about 9 months ago; now the left hand has carpal t.s. It's all very frustrating but I'd much rather have the surgery than not be able to use my hands...or walk for exercise. Incidentally, one of the best things for your knee -with or without surgery- would probably be "walking in water"/water therapy class or just walk in a swimming pool. I did this for about a year, until I moved across town, and it was wonderful! Whatever you decide, I hope it helps. Rosemary Russell age-51 yrs. dx.-6 yrs. ([log in to unmask]) Little Rock, Arkansas