Ascenzi A, Boyde A, Portigliatti Barbos M, Carando S
Dipartimento di Bio-patologia Umana, Universita La Sapienza, Rome, Italy.
J Biomech. 1987;20(11-12):1045-53. doi: 10.1016/0021-9290(87)90022-4.
Previous studies have shown that longitudinal and transverse lamellae in compact bone signal the presence of tensile and compressive forces, respectively. On this basis an investigation has been carried out to ascertain the distribution of lamellae in femoral shafts that have been deformed by bending. To do this, a series of undecalcified plane-parallel sections 100 microns thick were prepared, and the proportion of transversely oriented collagen and crystallites in the lamellae was measured, using circularly polarized light as an illuminating source and a Quantimet 720 image-analyzing computer. It has been concluded that the distribution of the two types of lamellae is in accordance with the need to compensate for the deformity produced by the bending of the bones, and that an obvious relationship exists between the macroscopic features of the femurs and their modified microscopic structures.
以往的研究表明，密质骨中的纵行骨板和横行骨板分别表明存在拉力和压力。在此基础上，进行了一项调查，以确定因弯曲而变形的股骨干中骨板的分布情况。为此，制备了一系列100微米厚的不脱钙平行平面切片，并使用圆偏振光作为照明源和Quantimet 720图像分析计算机测量骨板中横向排列的胶原蛋白和微晶的比例。得出的结论是，两种类型骨板的分布符合补偿骨骼弯曲产生的畸形的需要，并且股骨的宏观特征与其改变后的微观结构之间存在明显的关系。
