WATER AND ELECTROLYTE CONTENT OF HUMAN INTERVERTEBRAL DISKS UNDER VARIABLE LOAD
WATER AND ELECTROLYTE CONTENT OF HUMAN INTERVERTEBRAL DISKS UNDER VARIABLE LOAD
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DOI：
10.1097/00007632-198501000-00011
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发表时间：
1985-01-01
期刊：
影响因子：
3
通讯作者：
GOWIN, R
中科院分区：
文献类型：
--
作者：
KRAEMER, J;KOLDITZ, D;GOWIN, R
人体椎间盘充当渗透系统。水、盐和其他低分子物质渗透软骨板和纤维环。检测了69块人体腰椎间盘在加载一定重量前后不同区域的水、Na、K和灰分含量。在负载下，椎间盘会失去水分（环面 11%，核 8%）并获得 Na 和 K。长期负载后，椎间盘中电解质浓度升高，渗透吸收力增加，即使在相当大的压力下，椎间盘也能保留剩余的水分。压力降低后，水很快被重新吸收，并且椎间盘的高度和体积增加。泵送机构维持椎间盘的营养和生物力学功能。
The human intervertebral disc acts as an osmotic system. Water, salt, and other low-molecular substances penetrate the cartilage plates and annulus fibrosus. The content of water, Na, K, and ashes in different regions of 69 human lumbar intervertebral discs was examined before and after being loaded with certain weights. Under load, the disc loses water (annulus 11%, nucleus 8%) and gains Na and K. The higher concentration of electrolytes in the disc after a long period of loading increases its osmotic absorption force, and enables the disc to hold back the remaining water, even against a considerable pressure. After reduction of the pressure, water is quickly reabsorbed, and the disc gains height and volume. The pumping mechanism maintains the nutrition and biomechanical function of the intervertebral disc.