RELATIVE CONTRIBUTION OF TRABECULAR AND CORTICAL BONE TO STRENGTH OF HUMAN LUMBAR VERTEBRAE
RELATIVE CONTRIBUTION OF TRABECULAR AND CORTICAL BONE TO STRENGTH OF HUMAN LUMBAR VERTEBRAE
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DOI：
10.1007/bf02058659
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发表时间：
1969-01-01
期刊：
影响因子：
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通讯作者：
BLEUSTEIN, J
中科院分区：
文献类型：
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作者：
ROCKOFF, SD;SWEET, E;BLEUSTEIN, J
进行了一项实验，以确定皮质壳和中央骨小梁的峰值，非破坏性的压缩强度切除的人腰椎的相对贡献。测试的椎骨“单元”利用相邻椎间盘来分配载荷。在其他结果中，该研究表明：（1）皮质通常贡献峰值强度的45-75%，与松质骨的灰分百分比或物理密度无关;（2）当椎体松质骨的灰分含量<59%时，只有40%或更少的力直接由中央松质骨传递。当灰分含量超过59时，>40%的力通过中央小梁传递，并且正如所预期的，（3）老年受试者通过中央小梁传递的力比40岁左右的受试者少。
An experiment was performed to determine the relative contribution of the cortical shell and of the central trabecular bone to the peak, non-destructive compressive strength of excised human lumbar vertebrae. The vertebral “units” tested utilized the adjacent intervertebral discs to distribute the loads. Among other results the study indicated that (1) the cortex generally contributes 45–75% of the peak strength, regardless of percent ash or physical density of the trabecular bone; (2) when the ash content of a vertebral trabecular bone is <59%, only 40% or less of the forces are transmitted directly by the central trabecular bone. When the ash content exceeds 59, >40% of the forces are transmitted via the central trabeculae and, as would be expected, (3) less force is transmitted by way of the central trabeculae in older subjects than in those ≦40 years of age.