It would be three years ago when the orthopedic surgeon suggested I go for a Bariatric Surgery and lose 50 pounds before he would touch me for knee surgery.  Here I am three years later and I went for the surgery and have lost 50 pounds however the process is slowing down.  Every pound I seem to have to work for.  My question is the only things I can do is walk.  No Doctor will approve me for an exercise program.  Even walking a little can cause pain and further difficulty in walking.  Now a referral has been made to the orthopedic surgeon of which I am waiting for.  I would like to exercise so what can I do?

Can you swim or do water aerobics?  Are there any water based physical therapists in your area? 

YOga-burns about 245 calories and hour.

Why dont you get a set of handbells/resistance bands and lift weights in a chair or a recliner?  REsistance workouts burn fat and build muscle which burns more calories.

If you are a woman, as you age, you are suspible (sp) to muscle loss.

Do not do any heavy exercise. I suggest you physiotherapy treatment. that's better for you.