I fused up and down the spine but fortunately my kyphosis is not severe like old George had surgery for.Ihave done the recommended excercises according to the poster put out by the spondylitis association but I am rigid in spite of doing them since 1989.I think though , that it still helps me feel better in general.I also got rid of my thick multiple pillowsand use one thin one although I have to sleep in my Barcalounger a lot .I agree with others that you should stay away from the back crackers(chiropractors) if you don't want to be parylized.I also agree that there is no way to stop the fusion. But like we all say: move it or lose it! It sucks, but you will feel better if you continue swimming,walking etc.
Kev