Comparing Laminectomy and Laminotomy for Spinal Stenosis
Author Information
Author(s): Tai Ching-Lung, Hsieh Pang-Hsing, Chen Weng-Pin, Chen Lih-Huei, Chen Wen-Jer, Lai Po-Liang
Primary Institution: Chang Gung University, Taoyuan, Taiwan
Hypothesis
The integrity of the posterior complex plays an important role in postoperative spinal stability in decompressive surgery.
Conclusion
A lumbar spine with posterior complex integrity is less likely to develop segment instability than one with a destroyed anchoring point for the supraspinous ligament.
Supporting Evidence
- Intervertebral displacement under flexion was significantly greater in the laminectomy group compared to intact or bilateral laminotomy groups.
- Under extension motion, there was no significant difference in intervertebral displacement among the three procedures.
Takeaway
This study looked at how different spine surgeries affect stability. It found that one type of surgery is better at keeping the spine stable than another.
Methodology
Eight porcine lumbar spine specimens were tested intact and after two decompression procedures: bilateral laminotomy and laminectomy.
Limitations
The study used porcine spines instead of human cadaveric spines, which may affect the applicability of the results.
Participant Demographics
Adult porcine lumbar spines (L1–S1).
Statistical Information
P-Value
0.0000963 and 0.000418
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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