I suffer from lupus but this may help you as well.
I've just come to tell you of something that is really working for me re pain relief.
I bought myself a magni-wool magnetic underlay in a half hearted attempt at helping with the intense pain that I live with in my knees, feet, elbow, hands, wrist and various other wandering pain areas.
Since I have been sleeping on this underlay I have had no pain in my knees or anywhere else! (I couldn't walk up or down stairs without pain).
I am no longer as stiff in the mornings and feel much, much better!!!
I pray that it works for all chronic pain sufferers and highly recommend you try it.