What is the purpose of spinal fusion surgery?

Spinal fusion surgery is performed primarily to stabilize the spine by permanently connecting two or more vertebrae into a single solid bone. This procedure is often indicated for various conditions such as degenerative disc disease, spinal stenosis, or spondylolisthesis, where the stability of the spine is compromised. By achieving this fusion, the surgery helps to alleviate pain and prevent further deterioration of the spine by limiting the movement between the affected vertebrae.

While the other options address various aspects of spinal health, they do not accurately reflect the primary goal of spinal fusion. Muscle spasms might be alleviated post-surgery but are not the main focus of the procedure. Although improved flexibility could be a concern in some cases, spinal fusion typically reduces motion in the fused segment. Reducing inflammation within the spinal canal may be a secondary benefit in some scenarios but is not a direct aim of spinal fusion surgery.