Kriewall T J
Am J Obstet Gynecol. 1982 Jul 15;143(6):707-14. doi: 10.1016/0002-9378(82)90119-3.
The structural stiffness of 20 parietal bones from 10 fetal cadavers were tested under controlled laboratory settings. The slope at the onset of the load-deflection curve dictated the stiffness of the bone. These values were correlated with the bone's modulus of elasticity, mineral content, and bone density, as well as with anthropometric data. The stiffness exhibited as much as a Anthropometric factors correlated more with the change in stiffness than did material factors, such as changes in modulus, mineral content, and bone density. The bone exhibited a pronounced fiber orientation which significantly affected the modulus of the test specimens. The results are discussed in terms of obstetric management of preterm and term labor.
在可控的实验室环境下，对来自10具胎儿尸体的20块顶骨的结构刚度进行了测试。载荷-挠度曲线起始处的斜率决定了骨骼的刚度。这些值与骨骼的弹性模量、矿物质含量、骨密度以及人体测量数据相关。刚度表现出高达[此处原文Anthropometric factors correlated more with the change in stiffness than did material factors, such as changes in modulus, mineral content, and bone density. 中Anthropometric factors前似乎少了个具体数值]的[此处表述不太明确，可能是某种变化幅度之类的意思]。人体测量因素与刚度变化的相关性比材料因素（如模量、矿物质含量和骨密度的变化）更大。骨骼呈现出明显的纤维取向，这显著影响了测试样本的模量。根据早产和足月分娩的产科管理对结果进行了讨论。
