Lumbar Spine Surgery Posterior Interbody Vertebral Fusion with bone surgeon 3D animations. Illustrates the surgical technique for performing a posterior lumbar interbody fusion. This procedure is used to remove an intervertebral disc that is causing uncontrollable pain or is compressing the adjacent spinal cord or nerve roots. Surgeon 3D animations replace the removed disc and maintain correct alignment. Pedicle screw instrumentation is used to ensure stability while fusion occurs. 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. Also shown is the patient position, skin preparation and incision, the surgical approach, the removal of the pathological intervertebral disc, the bone block insertion, the pedicle screw fusion. Lumbar Spine Surgery Posterior Interbody Vertebral Fusion with bone surgeon 3D animations.