During spinal fusion, the surgeon locks together, or fuses, some of the bones in the spine. This limits the movement of these bones, which may help relieve pain. The back or neck won't be quite as flexible. Even so, one may feel more flexible after a fusion because one can move with less pain. Like other treatments, fusion surgery can be performed both anteriorly and posteriorly.
Minimally Invasive Spinal Fusion Procedures: