CORRELATION BETWEEN THE COMPRESSIVE STRENGTH OF ILIAC AND VERTEBRAL TRABECULAR BONE IN NORMAL INDIVIDUALS
CORRELATION BETWEEN THE COMPRESSIVE STRENGTH OF ILIAC AND VERTEBRAL TRABECULAR BONE IN NORMAL INDIVIDUALS
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DOI：
10.1016/8756-3282(85)90317-5
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发表时间：
1985-01-01
期刊：
影响因子：
4.1
通讯作者：
MOSEKILDE, L
中科院分区：
文献类型：
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作者：
MOSEKILDE, L;VIIDIK, A;MOSEKILDE, L
对30例15~87岁正常人的负重(椎骨)和非负重(髂骨)骨小梁骨的垂直和水平压缩强度(CS)在骨内和骨间的变化以及随年龄的变化进行了研究。所有人都突然死亡了。TH6、L1、L3椎体及左、右髂骨在-20度冰冻。C取下后立即取下。从冻结骨上取垂直和水平方向的圆柱形骨样，用材料试验机记录载荷-变形曲线。在所有椎体中，垂直CS明显大于水平CS(P<；0.01)，而对髂骨的CS无显著差异。因此，以垂直向水平CS指数表示的各向异性在髂骨脊的椎体中较高。椎体各向异性指数(Al)随年龄增长而增加，而髂骨则不随年龄增长而增加(r=0.56，P<0.01)。与年龄相关，椎体(垂直方向)和髂骨(水平方向)CS的下降趋势基本一致(r=-0.69，P<；0.01)。尽管椎体和髂骨的骨小梁结构有显著差异，但可以从水平的髂骨脊CS预测垂直椎体CS(r=0.88，P<；0.01，SEE=0.9 Mpa)。垂直髂骨CS与平均垂直椎体CS的相关性不显著(r=0.53，P<；0.05，SEE=1.25 Mpa)。
Intrabone and interbone variations and age-related changes in vertical and horizontal trabecular bone compressive strength (CS) were evaluated for loadbearing (vertebral) and nonloadbearing (iliac crest) trabecular bone from 30 normal individuals, 17 females and 13 males, aged 15-87 years. All had died suddenly. The vertebral bodies of Th6, L1, and L3 and the right and left iliac crests were frozen at -20.degree. C immediately after removal. Cylindrical bone samples in the vertical and horinzontal direction were taken from the frozen bone, and load-deformation curves were recorded by a materials testing machine. For all vertebral bodies, the vertical CS was much larger than the horizontal CS (P < 0.01), whereas no significant difference was found for the iliac crests. The anisotropy expressed as an index of vertical to horizontal CS, therefore, was higher in the vertebrae in the iliac crest. The anisotropy index (Al) increased with age in the vertebrae but not in the iliac crest (r = 0.56, P < 0.01). Age related, almost identical decreases in CS were observed in the vertebrae (vertical direction) (r = 0.81, P < 0.01) and in the iliac crest (horizontal direction) (r = -0.69, P < 0.01). In spite of the pronounced differences in the architecture between the vertebral body and iliac trabecular bone, the vertical vertebral CS could be predicted from the horizontal iliac crest CS (r = 0.88, P < 0.01, SEE = 0.9 MPa). The vertical iliac crest CS showed a less significant correlation to the average vertical vertebral CS (r = 0.53, P < 0.05, SEE = 1.25 MPa).