I've never heard of Trental being used for this, but it is an interesting idea. Here is a link to the manufacturer's web site for some more info. Please keep us in the loop if your doctors decide to go this route, it is kind of an off label idea for the drug, but in theory might offer some benefits. If they do it and it works, we would all like to know since this is such a common issue.
http://www.sanofi-aventis.us/live/us/en/index.jsp