Check the link for a radio interview with Dr. Brigham who is the author behind the restrictive limits on the new AMA guides. It is certainly interesting! There is a continuous struggle between disability and impairment and the proper use of guidelines, whether AMA or otherwise. He certainly provides a "rational" sounding basis for the guides, but it does pose severe problems as noted in past blogs and news items, listen carefully since these are arguments the insurance carriers will use to to reduce benefits! Radio Show. See also Jon Gelman's excellent blogs in this area.