A surgeon may use bone from the patient's hip or from a bone bank to stabilize two vertebrae after a discectomy. During a fusion surgery, the disc is removed, and the surgeon inserts a small wedge of bone in between the two vertebrae to restore the disc space. Over time, the two vertebrae "fuse" together into a solid structure. While this limits movement and flexibility, it can also help to ease pain.
The decision to fuse or not to fuse can be a complex one. It will probably be based on the surgeon's assessment of two factors: the amount of instability that a discectomy will cause and how much disc space is necessary to restore. If the surgeon opts not to do a fusion, a different follow-up surgery may be recommended.