Lumbar 1 Lumbar 2 disc herniations are rare because the upper lumbar vertebrae are less stressed than the lower lumbar vertebrae. The disc structure of each lumbar vertebra is basically the same. 1. Lumbar 1 and 2 disc herniation is rare because the upper lumbar segment is less stressed than the lower lumbar segment, and the bending motion at the upper end is smaller. Meanwhile, due to the curvature of the lumbar spine, the intervertebral discs of lumbar 1 and 2 are generally not subjected to shear force, compression force and other complexities, and the annulus fibrosus of the intervertebral discs is not prone to degeneration and cracking, so lumbar 1 and 2 herniated discs are relatively uncommon. The disc structure of each lumbar vertebra is basically the same, lumbar 1 lumbar 2 disc structure is not special. 2. The most common herniated discs are lumbar 3-4, lumbar 4-5, lumbar 5-sacral 1. The location of the most pain is generally the location of the belt and then moved down about one cross palm, which is the most common herniated range. The location of the pain is generally related to the segment in which the pain occurs, as well as the degree of compression of the herniation and the direction of the herniation. If a lumbar disc herniation is suspected, it is important to seek medical attention to avoid delays.