Zhu Dong, Chen Suhuan, Dong Xin, Zhu Weimin, Lu Hui
No. 1 Hospital of Jilin University, Changchun 130021, China.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2007 Aug;24(4):842-5.
We observed the structure and form of adult annulus fibrosus of lumbar intervertebral disc at the fibrous layer level. The annulus fibrosus of lumbar interverbral disc was delaminated by using microsurgical technique. 8 testing points were taken in each layer and the angles between their fibers going and horizontal plane were measured. The results showed that the fiber going angle at each measurement point continually increased with the increase of fibrous layer from outside to inside along the radial direction in horizontal plane. The least fiber going angle was 25 degrees - 30 degrees. The fiber going angle at the same layer gradually increased from front to back. The fiber going angle was 70 degrees - 90 degrees at the middle of the back of annulus fibrosus of lumbar interverbral disc. The fiber going was consistent with the posterior longitudinal ligament going. Through the normalized equation and normalized line, the fiber going angle at any point in any layer could be obtained conveniently. We also observed that the annuli fibrosus were interlaced in the front, left and right of annulus fibrosus of lumbar intervertebral disc. And there were more interlaced areas in local sides of lumbar intervertebral disc, but there was no interlaced areas between layers near the middle of posterior annulus fibrosus. So we came to the conclusion: Annulus fibrosus of lumbar intervertebral disc has a special micro-structure in adaptation with its function.
我们在纤维层水平观察了成人腰椎间盘纤维环的结构和形态。采用显微外科技术对腰椎间盘纤维环进行分层。每层取8个测试点，测量其纤维走行与水平面的夹角。结果显示，在水平面内，沿径向从外向内，各测量点的纤维走行角随纤维层的增加而持续增大。最小纤维走行角为25度至30度。同一层的纤维走行角从前向后逐渐增大。在腰椎间盘纤维环后部中间，纤维走行角为70度至90度。纤维走行与后纵韧带走行一致。通过归一化方程和归一化线，可方便地获得任意层任意点的纤维走行角。我们还观察到，腰椎间盘纤维环在前方、左侧和右侧相互交织。在腰椎间盘局部两侧有更多的交织区域，但在后侧纤维环中间附近各层之间没有交织区域。因此我们得出结论：腰椎间盘纤维环具有与其功能相适应的特殊微观结构。
