One of the issues in dealing with doctors is that they do not give much credence to anything not taught in medical school. Modern medicine does not have all of the answers we seek.
I had my right knee scoped 14 months ago, doing well. But last fall in Montana I couldn't walk as far or fast as I used to. Both 62 year old knees have significant arthritis.
What is an exercise that would reduce arthritic discomfort associated with extended hiking up and down.