Lumbar spondylolisthesis is a partial or complete slippage of the upper vertebral body on the surface of the lower vertebral body that occurs due to abnormal intervertebral connections. Simply put, a lumbar slip is the forward or backward displacement of one vertebral body over another vertebral body. Lumbar spondylolisthesis is usually an anterior slip. Posterior slippage occurs in the lumbar 5 and lumbar 4 vertebrae, with a high incidence in the lumbar 5 vertebrae and rare in the other lumbar vertebrae. The cause of lumbar spine slippage can be congenital (present at birth) or acquired, occurring in childhood or later. It is primarily caused by excessive mechanical stress of various kinds, and the trigger is usually having had strenuous exercise. There is another type of lumbar spondylolisthesis that is degenerative, i.e., a structural abnormality due to aging of various structures of the lumbar spine, usually occurring after the age of 50 years, which is usually accompanied by lumbar spinal stenosis and requires surgery. When a lumbar spondylolisthesis occurs, the patient may have no symptoms, which are only detected when a radiograph is taken, or may have various related symptoms, such as low back pain, lower extremity pain, numbness, weakness, and in severe cases, abnormal urination and defecation. Patients with more severe slippage may experience depression of the lumbar region, convexity of the abdomen, and even shortening of the trunk and swaying when walking. If there is no significant aggravation of lumbar spondylolisthesis, conservative treatment can be taken and lumbar spine X-rays can be reviewed regularly to understand the condition of the spondylolisthesis. The cause of lumbar spondylolisthesis is still not clear, but a lot of research shows that congenital developmental defects and chronic strain or stress injury are two possible important causes, and the latter is generally considered to be the main cause.