I had DBS surgery in October and unlike betty blue and others I have not had the excellent, immediate results they have experienced. Although, off meds , I can see there have been some improvements once my meds have kicked in my mobility and length of on time is far worse than pre-op.
My consultant has assured me that it can take up to 18 months to adjust the DBS system to the most appropriate levels but I don't feel this point was made clearly enough before I had the surgery. Consequently I feel disappointed that having tolerated the surgery I am feeling no benefit from it as yet.
I'm not trying to put you off having the op, just be aware that it isn't always an instant fix, don't have unrealistic expectations or think it's going to be an overnight miracle. I know that other people have had more spectacular results than me and I do still live in hope that my situation will improve over the coming months. I just think if hadn't expected so much I wouldn't have come down to earth with such a bump!
Best of luck and I hope you have the best possible outcome for you.