Spinal Fusion Surgery
How Fusion Compares to Decompression Alone
Results from meta-analyses (combined data from multiple studies):
| Outcome | Finding |
|---|---|
| Back pain | Fusion is significantly better (5 studies, 6,294 patients total) |
| Leg pain | No significant difference (4 studies, 6,243 patients total) |
| Daily function / Quality of life | Fusion improves outcomes in back pain cases. Significant QOL improvement in spondylolisthesis |
| Walking ability | No significant difference between approaches |
| Long-term outcomes | Similar regardless of fusion — except in cases with instability, where fusion is superior |
In plain terms:
- If leg pain and numbness are your main problems → Decompression alone is often sufficient
- If back pain is your main problem and instability is present → Adding fusion is beneficial
- If you have spondylolisthesis → Fusion leads to better long-term results