I had pain in my right shoulder and both knees for years and I had heard rumors of mechanics, sports figures and veterinarians using WD40 on their painful knees shoulders and elbows. Well, I had a can kicking around my garage and I went to retrieve it. I sprayed it on my shoulder and knees - I could not believe it but the pain went away within ten minutes.
I started a website and many people have told me of their success stories about WD40 and their pain relief for all these areas plus foot and ankle pain.
The site is: http://www.facebook.com/groups/482460338439694/?fref=ts
I hope this relieves your pain as quickly as it did mine.