Potential complications of an ACDF are bleeding, spinal nerve or blood vessel injuries, failure of bone to grow and infection. These complications are not common. More common problems are hoarseness and difficulty swallowing; these typically improve with time. Performing a spinal fusion results in loss of mobility of the areas fused. This may result in a decrease in neck motion, especially when more than one disc is removed. Once a disc is fused, it places the adjacent discs under more stress, potentially causing them to wear out and require more surgery. Nonetheless, the health benefits of undergoing ACDF, such as a dramatic reduction in pain as well as enhanced mobility and quality of life, often outweigh the potential risks and complications that are associated with this form of treatment.