Variation in the density of the femoral diaphysis with age.
Variation in the density of the femoral diaphysis with age.
复制标题
股骨骨干密度随年龄的变化。
DOI：
10.1302/0301-620x.49b4.781
复制
发表时间：
1967
期刊：
影响因子：
--
通讯作者：
J. Weatherell
中科院分区：
文献类型：
--
作者：
P. J. Atkinson;J. Weatherell
1.对股骨干不同部位的皮质骨样本的密度随年龄的变化进行了详细的研究。
2.相对高密度的骨和相反低密度的骨被发现沿骨干具有沿着螺旋图案。
3.沿股骨干向远侧沿着移动，从前方到后方有最大密度的移位。
4.在直立的身体姿势中，股骨的倾斜度是这样的，即由于股骨的承重特性，骨密度较高的区域可能会垂直对齐。
5. 50岁以后，大脑皮层的大部分区域的密度趋于下降，密度较低的区域比最初的高密度区域变化更大。因此，骨质疏松症不仅倾向于维持，而且通过增加致密骨和低密度骨之间的差异来加重密度分布的螺旋图案。
6.在骨干的远端区域，骨吸收最大，但几乎不影响后方。这两个部位之间的密度测定比较提供了骨质疏松症影响的明确指示。
1. A detailed study of density variations with age in cortical bone samples from different areas of the femoral diaphysis has been carried out.
2. Bone of relatively high density and, conversely, of low density was found to have a spiral pattern along the bone shaft.
3. Moving distally along the femoral shaft there was a transposition of the greatest density from the anterior to the posterior aspect.
4. In the erect body posture the femoral inclination is such that areas of denser bone might be expected to be aligned vertically because of the weight-bearing characteristics of the femur.
5. Most areas of the cortex tended to decrease in density after the age of fifty, the less dense areas changing more than those with an initial high density. Thus, osteoporosis tended not only to maintain but to accentuate the spiral pattern of density distribution by increasing the difference between dense and less dense bone.
6. In the distal region of the diaphysis bone resorption was greatest anteriorly but hardly affected the posterior aspect. A densitometric comparison between these two sites provided a clear indication of the effect of osteoporosis.