Hi
there is still a chance that you injury could not have healed. But a good physician will try every conservative measure possible before subjecting anyone to surgical intervention.
After your bracing you may still feel your original Sx as the ligaments that were injured have hopefully healed and tightened up. That being said, over use or over loading freshly healed lig's will reproduce your Sx perhaps to levels that surpass your original level (hopefully not)
Give this route of recovery about another 3 weeks. You should start to notice some kind of improvement. During this recovery don't go back to activities as normal. your hand is still injured. be nice to it....
Hope that helps
OPI