Bob Archer, I am also new to the list. My father has Parkinsons and the family is attempting to find out if he would be a viable candidate for the pallidotomy. He is 78 years old and does not have serious tremors but is terribly insecure on his feet and falls constantly. His speech is affected and he can no longer write legibly. His heart, constitution and mental capacities are very strong. His current doctor has been less than enthusiastic about anything but nursing care. My question is: Who is a candidate for the operation? Is age a factor? If patient suffers more inbalance and rigidity than tremors is that signficant? I am concerned about the condition of speech after the operation. Could someone answer these questions? Also my father is in Naples, Florida and the daughters are in Boston and San Francisco areas. Does anyone know if they are doing these operations in the area of Naples (west coast of Florida) or should we plan on going to Boston or Stanford? Thank you very much Jill Drohan