Spinal fusion study finds no significant benefit over decompression alone

A study involving 2,252 adults has questioned the additional benefits of spinal fusion procedures. Research conducted by the American College of Physicians and the Annals of Internal Medicine, utilizing data from the Norwegian Spine Register, indicates that adding spinal fusion to simple decompression for degenerative lumbar spondylolisthesis provides no significant advantage in pain, function, or the need for reoperation after 12 months.

The findings showed that patients undergoing fusion had an Oswestry Disability Index (ODI) score of 20.0, compared to 22.3 for those receiving decompression alone. Furthermore, the fusion procedure was associated with longer operation times, extended hospital stays, and increased perioperative complications, without any specific subgroup showing improved outcomes.

Medical experts emphasize that degenerative disc changes seen on imaging do not always correlate with pain. Conservative treatments, such as physiotherapy and targeted injections, are often recommended before surgery. When surgery is necessary, clinicians must choose between stabilizing the segment through spondylodesis or maintaining mobility via disc prostheses, based on individual patient stability and symptoms.