Zarzur E
Department of Surgery (Clinical Anatomy Branch), University of São Paulo Medical School, Brasil.
Arq Neuropsiquiatr. 1996 Sep;54(3):451-4. doi: 10.1590/s0004-282x1996000300014.
Literature on the anatomy of the human vertebral column characterizes the shape of the lumbar vertebral canal as triangular. The purpose of the present study was to determine the precise shape of the lumbar vertebral canal. Ten lumbar vertebral columns of adult male cadavers were dissected. Two transverse sections were performed in the third lumbar vertebra. One section was performed at the level of the lower border of the ligamenta flava, and the other section was performed at the level of the pedicles. The shape of the lumbar vertebral canal at the level of the pedicles tends to be oval or circular, whereas the shape of the lumbar vertebral canal at the level of the lower border of the ligamenta flava is triangular. Thus, the shape of the human lumbar vertebral canal is not exclusively triangular, as reported in the literature. It is related to the level of the transversal section performed on the lumbar vertebra. This finding should be taken into consideration among factors involved in the spread of solutions introduced into the epidural space.
有关人体脊柱解剖结构的文献将腰椎椎管的形状描述为三角形。本研究的目的是确定腰椎椎管的精确形状。对十具成年男性尸体的腰椎脊柱进行了解剖。在第三腰椎进行了两个横切面。一个切面在黄韧带下缘水平进行，另一个切面在椎弓根水平进行。椎弓根水平的腰椎椎管形状倾向于椭圆形或圆形，而黄韧带下缘水平的腰椎椎管形状是三角形。因此，人体腰椎椎管的形状并非如文献所报道的那样完全是三角形。它与在腰椎上进行横切面的水平有关。在考虑注入硬膜外腔的溶液扩散所涉及的因素时，应考虑这一发现。
