I've been told by two doctors now that in order for surgery to workon carpal tunnel syndrome, a cortisone shot has to work. So I had a cortisone shot in my wrist. And the pain went away for about an hour or two, but then it came back. Then the pain went away for about a half a day, and it's been back ever since (four days). The fact that cortisone shot worked in the very beginning, but not now, means to me that it didn't work and that surgery would not be effective. However, another doctor told me that if it works for even an hour, that surgery would be effective.. Does anyone know the correct answer to this?