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Spinous process fixation devices for instrumented spinal fusion.
Mitchell Hardenbrook1, Jeffrey S Henn2, Jeffrey Oppenheim3
1Tufts University School of Medicine Boston, Massachusetts.
Surgical Technology International
|October 2, 2013
Summary
Spinous process fixation offers a less-invasive posterior spinal fusion option. Biomechanical data show it provides equivalent stability to pedicle screws with reduced risk.
Area of Science:
- Spine surgery
- Orthopedic biomechanics
- Spinal instrumentation
Background:
- Lumbar spinal fusion is a common procedure for various spinal conditions.
- Posterior instrumentation enhances stability and fusion rates.
- Spinous process fixation is a less-invasive posterior fixation technique.
Purpose of the Study:
- To clarify the role and benefits of spinous process fixation devices in lumbar spinal fusion.
- To differentiate spinous process fixation devices from spinous process spacers.
- To review biomechanical evidence supporting spinous process fixation.
Main Methods:
- Review of biomechanical data comparing spinous process fixation to other posterior instrumentation.
- Analysis of clinical outcomes and risks associated with spinous process fixation.
- Distinguishing features between fixation devices and non-fixation spacers.
Main Results:
- Spinous process fixation offers biomechanical stabilization comparable to pedicle screws.
- Modern spinous process fixation devices present a less-invasive surgical option.
- Quantitative evidence supports the efficacy of spinous process fixation.
Conclusions:
- Spinous process fixation is a viable alternative for instrumented lumbar fusion.
- These devices offer potential advantages including reduced clinical risk and invasiveness.
- Clear distinction between fixation devices and spacers is crucial for appropriate application.
