Rose, Suggest very strongly that anyone wanting to lose weight consider the "intermittent" diet where one consumes all their calories within a narrow band of time, be it 6 hours or 1 hour. Some time ago I read about a US Army general with a background in special forces that claimed one only needed to eat one meal a day. When I read that I thought the guy was nuts! Only later in life did I figure out he was right. Funny how life is that ones views can change so dramatically. I love food! Only today I'm smart about what I eat and when I eat it. "It Works!"
Rose, As I recall we are close to the same age - 70 plus few months.
On of my life's mottoes is:
"The art of a good living - is to learn to live with the defects you have" - (meaning everyone have body defect's one way or another).
Just ask my children if they have heard that phrase a couple of times !! :) -------------------------------------
I have had my left knee 'tender in between for the last 35 years' - but still never operated. used to switch to biking for a period - that always seemed to solve the problem 'as i is a different sort of strain on the knee joint' - I always use knee brace in periods of problems (also trough the day - sometimes for support and to keep the knee warm).
If you don't have it already (I would guess that you do) - buy a couple of good elastic knee braces - and your ready for 'looking like a model in no time' :)