04-23-2009, 08:32 PM
I have it. Mine isn't too bad, only a slight curve. I suffer from back pain from time to time, but its not that big of a deal.
I did have a friend though who had it so bad that she had to wear a back brace. She doesn't anymore, but at one point in time they were thinking about having her wear it during the daytime too instead of just as night.