Hi hiprob and welcome to eheath: This Forum where you have posted is not the Ask A Doctor forum, which you can reach by hitting on the blue line at the top of this page...This is only lay people trying to help...However, being somewhat learned on this subject, I would think that your own Orthopedist, who knows your history of do's and don't, would be the wisest one to handle this query...Either way good luck...FYI, I know of a man that had three of these done before it finally took...Take care...
Caroline