Ideally, this is a question you should ask your physician. Each patient is different and some may be more susceptible to certain complications than others. As well, complications can also occur as a result of the patient’s overall health and not just the surgery.
That being said, the most common complications include the screws in the hardware becoming loose, a break in the hardware, or the graft or hardware may move (migrate). In some people, the area around the fusion may begin to degenerate, requiring more surgery.