Dear Ron, I would suggest Deep Brain Stimulation, in particular Subthalamic Nucleus (STN) stimualtion: advantages above pallidotomy: - no lesions - reversible - less side effects - surgery possible on both sides - improvement of all symptoms, especially gait and freezing - reduction of medication by around 50 % Where: still experimental in the USA: Emory in Atlanta Mount Sinai in New York Rush Presbytarian in Chicago University Hospital Kansas City Most experienced are centers in Europe, including the center I work, where I have been involved in 50 stimulations, Sincerely, Chris van der Linden, M.D. St. Lucas Hospital Ghent Ghent BELGIUM