The RSDSA news publication that I just recieved today had an excellent article re; surgery and RSD and guidelines as to blocks before surgery. Are you a member of RSDSA-if not I highly recommed that everyone join. The publications keep you up to date and are good references so I keep all of them. If you are not, call Jim Broatch at RSDSA and I am sure he wil send you the news letter. Fondly-Carol