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Dynamic fixation

What is Dynamic Stabilization?

If you need to undergo surgery for spinal disc problems, you may also need added stabilization of the spine to prevent additional problems.


Dynamic stabilization is a surgical technique designed to allow for some movement of the spine, while maintaining enough stability to prevent too much movement.


Indication for Dynamic stabilisation:

  • The movement of a worn spinal disc causes pain
  • A congenital or acquired defect allows the spine to become unstable (spondylolisthesis)
  • Surgery requires removal of the normal stabilizing structures of the spine

Unstable spine and excessive motion can cause the nerves adjacent to the spinal column to become pinched. This can lead to leg pain, numbness, and weakness.


By stabilizing the spinal column, the idea is to limit abnormal motion of the spinal segments, and prevent nerve impingement.

Dynamic Stabilization vs. Lumbar Fusion:

Traditionally such problems were addressed by Fusion surgery.


Fusion surgery of the spine is accomplished by stimulating bone to grow between two or more adjacent spinal segments to prevent future motion.


Often metal instrumentation is used to stabilize the spinal segments while bone eventually forms between the vertebrae.


Dynamic stabilization is an alternative to fusion which allows controlled amount of motion between adjacent vertebrae, but it does not completely eliminate this movement.


Why Dynamic Stabilization?

Fusion surgery leads to excessive stresses to the adjacent levels. In a young patient this often necessitates additional surgeries.


Dynamic fixation prevents transferring excessive stress to the adjacent segment of spine and allows controlled movements.



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