Mamaw---thanks for that ---yes it's the best thing for me too and I have done well.the other knee needs doing too. I do think it's the fear,walking is fine on good knee and I am never still,look after small grandchildren and go out a lot. I think I am frightened to bend it further than it will go so off to the gym and see if I can do better then practis on my own bike without hubby holding me. Thanks for the prayer