Study Questions Efficacy of Spinal Fusion Over Decompression Alone for Degenerative Spondylolisthesis
Study Overview
A groundbreaking study has cast doubt on the superiority of spinal fusion surgery over decompression alone for treating degenerative spondylolisthesis. The research, led by Ivar M. Austevoll, MD, PhD, and colleagues, involved 222 patients with a mean age of 66.2 years, all of whom underwent surgery with a 2-year follow-up period.
Key Findings
- Surgeon Recommendations vs. Random Allocation: Surgeons recommended decompression alone for 112 patients and decompression with fusion for 110 patients. Random allocation resulted in 53% of the decompression-alone group and 52% of the fusion group receiving their recommended treatment.
- Clinical Outcomes: At the 2-year mark, 75% of patients who received surgery in agreement with surgeon recommendations and 73% of those who did not saw at least a 30% reduction in their Oswestry Disability Index scores.
- Worsening Conditions: Only 7% of patients in both groups reported worsening conditions, indicating no significant difference in outcomes based on the type of surgery received.
Implications for Clinical Practice
Dr. Austevoll highlighted the study's challenge to spine surgeons' ability to tailor surgical treatments based on their experience and skills. He advocated for a reliance on current evidence favoring decompression alone, which is less extensive, less expensive, and safer, until further evidence supports the superiority of fusion surgery in specific patient subgroups.
Conclusion
This study adds to the growing body of evidence questioning the routine use of spinal fusion for degenerative spondylolisthesis. Despite these findings, Dr. Austevoll expressed uncertainty about a significant shift in practice, citing personal preferences, local traditions, and economic incentives as potential barriers to change.
Source: Healio