Oki S, Matsuda Y, Shibata T, Okumura H, Desaki J
Department of Orthopaedic Surgery, Ehime University School of Medicine, Shigenobu, Japan.
Spine (Phila Pa 1976). 1996 Jan 15;21(2):174-7. doi: 10.1097/00007632-199601150-00003.
Vascular buds in rabbit vertebral endplates were examined by scanning electron microscopy of corrosion casts.
To examine morphologic differences between vascular buds in two regions of the vertebral endplate (inner anular and nucleus pulposar).
Vascular buds are specific structures present at the vertebral endplate that are important as nourishing channels. There is a significant difference in permeability between the lateral portion (inner anular) and the central portion (nucleus pulposar) of the endplate, the latter usually being permeable and the former being impermeable. Morphologic differences between vascular buds in the two regions have not been investigated previously.
Eight 20-week-old rabbits were used. Vascular buds in rabbit vertebral endplates were examined by scanning electron microscopy of corrosion casts.
The vascular buds in the region of the inner anulus form simple loops, but those in the area near the nucleus pulposus exhibit swollen and complex coil-like loops. Although they differ structurally, the average number of vascular buds per area does not vary between the two regions.
We suggest that the morphologic difference between the vascular buds in the two regions (inner anular and nucleus pulposar) plays a principal role in permeability at the endplate.
通过铸型腐蚀扫描电子显微镜检查兔椎体终板中的血管芽。
研究椎体终板两个区域（内环和髓核）血管芽的形态学差异。
血管芽是椎体终板处的特殊结构，作为营养通道具有重要意义。终板外侧部分（内环）和中央部分（髓核）的通透性存在显著差异，后者通常具有通透性，而前者不具有通透性。此前尚未对这两个区域血管芽的形态学差异进行研究。
使用8只20周龄的兔子。通过铸型腐蚀扫描电子显微镜检查兔椎体终板中的血管芽。
内环区域的血管芽形成简单的环，而髓核附近区域的血管芽呈现肿胀且复杂的盘绕状环。尽管它们在结构上有所不同，但两个区域每单位面积血管芽的平均数量并无差异。
我们认为两个区域（内环和髓核）血管芽的形态学差异在终板通透性方面起主要作用。
