I recently saw an advert for a therapy in the evening standard. It read...
"Discover our painless solution to painful knees for yourself. Apos Therapy is a clinically proven, non-surgical treatment programme to releive knee pain and improve mobility"
I was interested so I discovered how they do it. More info coming up.
UPDATE
I found a reference to the Range of Motion study and where to buy this product.
http://seeqbox.com/feature2.php?url=http://www.beveragedaily.com/Formulation/Acai-juice-shows-joint-health-potential-Monavie-study&title=Range%20of%20Motion%20study%20on%20MonaVie%20Active%20Aseye%20Berry
Product available from
http://hopgood.mymonavie.com/product/juice.html
(choose the green label active MonaVie)