i was told by my doctor 3 months before I could start lifting again.
I believe the milder your sym before the operation the better your chances of a full recovery.
that said i feel its aways best to give conservative treatments a fair shot- as with any surgery there are potential risks, plus not all surgeries fix the problem, if the doctor make a mistake he could damage the nerve further. If you do go the surgery route make sure you select an good surgeon, one who has performed this specific procedure many many times (successfully of course)
www.cubital-tunnel.com/cms/Surgery/2385-...-questions.html#2386