When a lumbar disc herniation reaches a certain level of severity and surgery is necessary, open surgery is a very good option. However, not all lumbar disc herniations require surgery. For particularly severe lumbar disc herniations, even to the point of lumbar disc prolapse, surgery has a positive effect, and open surgery can completely decompress the spinal canal and remove the nucleus pulposus completely. The most definitive treatment for a lumbar disc herniation is to remove all the discs and perform an intervertebral fusion. Due to the possibility of lumbar instability, pedicle nailing and interbody fusion between the two segments is also performed.