You be under general during the surgery. The pump will likely be set at its lowest setting initially. If that dosage is not adequate, you will return to your pain specialist and that will use a wireless device plced over the pump to increase the dosage. You may have to have the pump readjusted a few times before optimal pain relief is achied. Until such point is achieved, you will likely continue to take your oral meds. There is at least a 2 week post op period during which you should not bend, twit, lift your arm over your head, or lift more than 5 lbs. In some cases you may have to wear a supporting brace for the initial 2 weeks.