To my knowledge, the use of synthetic cartilage injections, are 50% successful in preventing/delaying knee replacement surgery, but has not been FDA approved for the foot or ankle or hip. I know this is coming down the pike, and this article shows the foot is getting some good research in this field.
I was wondering if you do any hyaleronic acid injections for foot joint OA pain. Here's a link to a very interesting story: http://www.news-medical.net/
