Lumbar intrathecal ligaments

被引:7
|
作者
Kershner, DE [1 ]
Binhammer, RT [1 ]
机构
[1] Univ Nebraska, Med Ctr, Dept Cell Biol & Anat, Omaha, NE 68198 USA
关键词
intrathecal ligaments; denticulate ligament; spinal meninges; piaarachnoid; nerve root tethering;
D O I
10.1002/ca.1100
中图分类号
R602 [外科病理学、解剖学]; R32 [人体形态学];
学科分类号
100101 ;
摘要
A meticulous examination was performed on 56 vertebral columns from cadavers between 64 and 89 years of age. Identification of all contents within the dural sac was completed however, the main focus was the cauda equina and lumbar region. In addition to scope dissection, radiographs and histological preparations were used to identify structures, tissue types, and any possible pathology. Discrete intrathecal ligamentous bands were observed in all cadavers examined. They were found randomly binding the dorsal nerve roots of the cauda equina to the dura. Occasional binding of the ventral nerve roots to the dorsal roots was observed. Histological examination demonstrated a dense collagen ligament varying between 0.13 and 0.35 mum in thickness and from 3 mm to 3.5 cm in length. The average number of ligaments found per cadaver was 18. These Ligaments displayed a broad base attachment to the nerve root or dura of approximately 3 mm. Looping of the nerve roots associated with these Ligaments was seen in one cadaver with a burst fracture. Electron microscopic studies of these ligaments demonstrated similarities to denticulate Ligaments. It is suggested that the intrathecal ligaments represent remnants from fetal development of the denticulate ligaments. Clin. Anat. 15:82-87, 2002. (C) 2002 Wiley-Liss, Inc.
引用
收藏
页码:82 / 87
页数:6
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