Dups is often triggered by trauma. What could be more traumatic than surgery? While surgeons strongly deny it, it is common to have additional Dups tissue form right after surgery. It may or may not develop into a problem.
Surgery should be your *last* resort, not your first! Take a look at NA. I've had both, and form me it is night and day. My surgical hand is just about shot, whereas the NA hand is as good as new. Do yourself a favor and check into NA.
(I've written the above *so* many times over the last 8 years that I should just have it ready to cut and paste it whenever needed :-)