Hi....i was just diagnosed w mals..median artucate ligament syndrone..i am having open surg soon. I had a nissen fundopilation done about six years ago. I had a full wrap done. My surgeon wax chief gastro at dartmouth hitchcock hosp in nh..this dr told me that the wrap either full or partial..cannot be undone..unless something has changed in the few years since. I had a difficult time eating for over a year after that F surg. But..i have no symptoms oif gerd anymore..now am dealing w mals. I hope this helped you somne. Carolina