Spinal fusion (overview)

Changed by Mostafa Elfeky, 13 Apr 2021

Updates to Article Attributes

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Spinal fusion is a broad term to denote the joining of two or more adjacent vertebral segments. Fusion can be congenital or acquired as a direct result of disease or deliberately following spinal surgery. 

Congenital fusion

Fusion of two or more adjacent segments is encountered either as an isolated, usually incidental, finding or in a variety of conditions with multiple other defects. 

Acquired fusion

Many disease processes can result in fusion of adjacent vertebrae including: 

Operative fusion

Numerous procedures have been developed over the years to fuse spinal segments to treat a variety of conditions (e.g. spondylolisthesis, unstable spinal fractures, disc protrusions). It should be noted that it is osseous fusion thanthat confers long-term stability and that fusion solely with instrumentation will eventually fail 1.

Hardware

A number of components are used to achieve fusion. These include 1

  • connecting rods
  • Hartshill rectangles
  • interbody spacers/cages
  • laminar hooks
  • plates
  • screws
    • pedicle screws 
    • facet joint screws
    • translaminar screws
  • vertebral body replacement devices
  • wires
Techniques

One or more of the above-mentioned components can be utilised to achieve fusion. Some of the more common procedures include:

  • -<li><a href="/articles/ankylosing-spondylitis">ankylosing spondylitis</a></li>
  • -</ul><h4>Operative fusion</h4><p>Numerous procedures have been developed over the years to fuse spinal segments to treat a variety of conditions (e.g. <a href="/articles/spondylolisthesis-1">spondylolisthesis</a>, unstable <a href="/articles/spinal-fractures">spinal fractures</a>, <a href="/articles/disc-protrusion">disc protrusions</a>). It should be noted that it is osseous fusion than confers long-term stability and that fusion solely with instrumentation will eventually fail <sup>1</sup>.</p><h5>Hardware</h5><p>A number of components are used to achieve fusion. These include <sup>1</sup>: </p><ul>
  • +<li><a href="/articles/ankylosing-spondylitis-1">ankylosing spondylitis</a></li>
  • +</ul><h4>Operative fusion</h4><p>Numerous procedures have been developed over the years to fuse spinal segments to treat a variety of conditions (e.g. <a href="/articles/spondylolisthesis-1">spondylolisthesis</a>, unstable <a href="/articles/spinal-fractures">spinal fractures</a>, <a href="/articles/disc-protrusion">disc protrusions</a>). It should be noted that it is osseous fusion that confers long-term stability and that fusion solely with instrumentation will eventually fail <sup>1</sup>.</p><h5>Hardware</h5><p>A number of components are used to achieve fusion. These include <sup>1</sup>: </p><ul>
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Image 6 X-ray (Lateral) ( create )

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