In general, gender doesn't seem to make a difference in how well patients do after neck fusion surgery.
A recent study looked at about 150 patients who had fusion surgery at multiple levels (or locations) in the neck. The surgical team used bone from the fibula, the small outer calf bone, to join the vertebrae in patients' necks. Only 14 patients did not have solid bone fusions two years after surgery. Ten of these patients were women. However, the difference in the success rates of men and women was felt to be slight. According to most research, gender doesn't affect results from neck fusion surgery in any reliable way.