I had my surgery 2 years ago and my back feels wonderful but my legs bother me a lot sometimes. especially my left knee. for no reason it will start hurting with just a dull pain and feel like that for a few weeks. The pain hurts the most when I turn my leg trying to get comfortable in bed. Walking is the only thing that helps it. Funny thing is that it never swells or bruises, it just hurts like it is. Does anyone else ever get this problem.