Lumbar 4-5 or lumbar 5 sacral 1 lumbar disc herniation is a disease called lumbar disc herniation in which the nucleus pulposus protrudes with or without compression of nerve roots due to degenerative changes in the lumbar intervertebral disc, whether caused by trauma or rupture of the annulus fibrosus due to poor posture. However, if the herniated disc is mild and does not compress the nerve roots, there are usually no serious symptoms, and most of them can be effectively treated through conservative treatment, such as lumbar back exercises, bed rest, and traction. However, if the herniated disc has significant compression on the nerve roots, and the compression is long enough to cause neuropathy degeneration it can have very serious consequences, leading to pain hypersensitivity or muscle weakness in the lower extremities. For this kind of severe disc herniation, conservative treatment does not have a good effect, and it may be necessary to remove the disc that is compressing the nerve roots by surgical methods, such as intervertebral foraminoscopy, and for patients with lumbar instability, it may be necessary to do disc removal and internal fixation of the intervertebral bone graft to maintain the stability of the spine.