I am so glad you started this thread. 2 different docs told me I should have a knee replacement by the end of the year, because it is bone-on-bone on BOTH knees. Frankly, I am scared. My dentist had knee surgery 4 months ago, I asked him how he was doing - not so good! He mentioned a doc in St Louis area (contact me if interested) who has HELPED 100% of his patients with this condition - WITHOUT SURGERY! With sleep apnea, going under anesthetic is tricky so I would rather not!! Good luck