Fig. 2From: Factors associated with low back pain in patients with lumbar spinal stenosis: a cross-sectional studyIntervertebral discs at L3–L4, L4–L5, and L5–S1 were divided into five equal areas each, with the first, middle, and last fifth areas being the anterior annulus fibrosus, the centre of the nucleus pulposus, and the posterior annulus fibrosus, respectivelyBack to article page