The patient is evaluated by the movement disorder neurologist prior to surgery. The patient is admitted two days prior to surgery. On the preoperative day the patient undergoes UPDRS, H&Y and Schwab and England activities of daily living assessment in “off” medication condition.
A video recording is also performed at this stage. The same protocol of assessment and video recording is performed in “on” condition. Patient is observed in neurosurgical intensive care for one day after surgery and discharged on the third postoperative day. Follow up visits are scheduled at 1, 3, 6 and 12 months after surgery.