Lumbar spinal stenosis is a type of disease in which various causes shorten the diameter of the spinal canal, compressing the dural sac, spinal cord or nerve roots, resulting in corresponding neurological dysfunction. It is one of the causes of common lumbar spine diseases such as low back pain and low back and leg pain, also known as lumbar spinal stenosis syndrome, which mostly occurs in middle-aged people over 40 years old. It is often asymptomatic at rest, but after walking for a certain distance, symptoms such as pain, numbness and weakness in the lower extremities appear and need to be relieved by squatting or sitting down for a while before continuing to walk. With the aggravation of the disease, the walking distance becomes shorter and the time needed to rest becomes longer. The cause of lumbar spinal stenosis is common in orthopedics, and the causes are complex, ranging from congenital lumbar spinal stenosis to degenerative diseases of the spine, as well as spinal fractures or dislocations caused by trauma or spinal stenosis after lumbar surgery. The most common of these is degenerative lumbar spinal stenosis. Primary lumbar spinal stenosis: caused solely by congenital bone development abnormalities, which is less common clinically; secondary lumbar spinal stenosis: caused by intervertebral disc vertebrae, degenerative joint degeneration or spinal slippage, traumatic fracture dislocation, deformational osteitis, etc. The most common of these is degenerative spinal stenosis.