medilaw.tv Lumbar Spine Transforaminal Interbody Vertebral Fusion cage Goals medical-legal animations. Shows the goals of a lumbar interbody fusion, which are to remove the damaged, painful intervertebral disc and replace it with bone. This eventually fuses the two vertebral bodies together into one solid bone. This should lead to improved function and less pain. The metal or plastic hardware provides immediate stability while the bony fusion occurs over the following three to twelve months. A transforaminal lumbar interbody fusion is used to remove an intervertebral disc that is causing uncontrollable pain or is compressing the adjacent spinal cord or nerve roots. Cage struts are used to replace the removed disc and maintain correct alignment. Pedicle screw instrumentation is used to ensure stability while fusion occurs. medical-legal animations. There are many different techniques to achieve the same end result, a pain-free, stable, anatomically positioned bony fusion. However, the basic procedure illustrated here is common to all posterior lumbar interbody fusions. Considerations include the patient position, skin preparation and incision, the surgical approach, the removal of the pathological intervertebral disc, the cage strut insertion, the pedicle screw fusion instrumentation, x-ray position checks and finally wound closure. Lumbar Spine Transforaminal Interbody Vertebral Fusion cage Goals medical-legal animations.