Found this interesting: Apparently CP symptoms/tension comes back after SDR. The other side of the argument is of course things like this(not posting to ask for money!):
I think SDR can be of some benefit but I think people need to realize that the brain is the key to Cerebral Palsy even more than the nerves. I'd like to see the movie regardless of how I feel about the surgery itself because there are almost no films showing my type of Cerebral Palsy. Hence why I had to make my own films.