Dr. says I need to have C456 fused soon as possible to prevent further injury, Have any one had this type of thing done? How was the outcome. And how is it to have a stiff neck. I wonder if the cure is worse than the ailment. I just had my shoulder done last May and now they say the neck was part of the same accident, but symptoms were masked by the severity of the shoulder injury. It's beginning to look like time for the long walk off the short dock