![A part of the disc or the complete disc is removed](https://veritas.widen.net/content/csaxeozong/png/alif-slideshow-1.png?use=idsla&color=&retina=false&u=at8tiu&w=974&h=548&crop=yes&k=c)
A lumbar interbody fusion surgery involves the removal of the spinal disc and replacing it with a spacer, called an interbody cage, filled with bone graft material. The bone graft provides a favorable environment for new bone growth and fuses the section of the spine together.
![Spinal Interbody Cage](https://veritas.widen.net/content/rldtcly6q3/png/alif-slideshow-2.png?use=idsla&color=&retina=false&u=at8tiu&w=974&h=548&crop=yes&k=c)
A lumbar interbody fusion surgery involves the removal of the spinal disc and replaces it with a spacer, called an interbody cage, filled with bone graft material. The bone graft provides a favorable environment for new bone growth and fuses the section of the spine together.
![Bone graft is filled around and inside the cage](https://veritas.widen.net/content/ahxei8famk/png/alif-slideshow-3.png?use=idsla&color=&retina=false&u=at8tiu&w=974&h=548&crop=yes&k=c)
A lumbar interbody fusion surgery involves the removal of the spinal disc and replaces it with a spacer, called an interbody cage, filled with bone graft material. The bone graft provides a favorable environment for new bone growth and fuses the section of the spine together.
![New bone grows around the space and fuses the two spinal segments](https://veritas.widen.net/content/i82jtrqzh5/png/alif-slideshow-4.png?use=idsla&color=&retina=false&u=at8tiu&w=974&h=548&crop=yes&k=c)
A lumbar interbody fusion surgery involves the removal of the spinal disc and replaces it with a spacer, called an interbody cage, filled with bone graft material. The bone graft provides a favorable environment for new bone growth and fuses the section of the spine together.