What is the difference between lumbar spinal stenosis and lumbar disc herniation? 1, the lumbar spinal canal includes the central spinal canal and the lateral spinal canal, the former mainly refers to the part occupied by the dural sac, the latter is the nerve root channel, i.e. the nerve root canal, of which the lateral saphenous fossa is the narrowest part of the nerve root canal. The size and width of the lumbar spinal canal is different for each person, just like the height of a person. Some people have a smaller than normal spinal canal, but people with lumbar spinal stenosis usually have a condition based on developmental spinal stenosis combined with arthrogryposis, disc herniation, and ligamentous hypertrophy. 3, lumbar spinal stenosis and lumbar disc herniation patients have herniated discs on CT and MRI, but the role played by the herniated lumbar discs in the two diseases is different 4, lumbar spinal stenosis is characterized by bed rest pain significantly relieved or disappeared, with typical intermittent broken line (i.e., symptoms appear after walking hundreds of meters, can be relieved by a little squatting rest, and can continue to walk, and after walking hundreds of meters The same symptoms appear, and can be relieved after rest), and cycling without symptoms, in addition is the neurological examination is often no obvious localization signs. 5, lumbar disc herniation is characterized by typical radicular symptoms, i.e. pain from the hip to the calf, radiating, obvious neural localization signs on physical examination, and positive straight leg raise test.