I would definitely ask which technique he will be using. It basically boils down to one incision or two.
I cannot seem to remember the exact names and pros and cons of each...
I did find a lot of info on the web prior to my surgery.
Once again though it boils down to which technique your surgeon knows and is comfortable with. The rehab process for me was very slow, with a lot of time spent in brace. This was extremely uncomfortable, especially at night.