X-RAY-DIFFRACTION STUDIES ON THE LATTICE PERFECTION OF HUMAN BONE APATITE (CRISTA-ILIACA)
X-RAY-DIFFRACTION STUDIES ON THE LATTICE PERFECTION OF HUMAN BONE APATITE (CRISTA-ILIACA)
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DOI：
10.1016/s8756-3282(95)80385-8
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发表时间：
1995-04-01
期刊：
影响因子：
4.1
通讯作者：
STERN, WB
中科院分区：
文献类型：
--
作者：
HANDSCHIN, RG;STERN, WB
人骨磷灰石的晶格完整性本文用X射线衍射轮廓拟合和谱线展宽分析相结合的方法，系统地研究了117例0-90岁人的髂嵴骨的X射线衍射特征，并与年龄、性别、组织类型进行了相关性分析（皮质肌、海绵体）和位置（上级、中间和下级）不同结晶方向[使用反射的长度轴（002），通过反射的基面（300）、（210），和（310）]，0-30岁年龄组内的骨样本受到c轴方向结晶度增加的强烈影响（畴尺寸增加5-7 nm，应变减小），而在a轴方向上结晶度显著降低（畴尺寸分别缩短5-7 nm，应变增加）与磷灰石结构内的相同杂离子取代相关，在30-80岁年龄组内，有序化和无序化过程之间似乎存在一定的平衡，在统计学上仅观察到基底面内结晶度的轻微增加，年龄作为主要固定效应对所有研究参数都具有高度显著性，结晶度与组织类型密切相关（皮质，海绵）在骨微晶的长轴方向。
The lattice perfection of human bone apatite (iliac crest of 117 individuals aged 0-90 years) was systematically investigated by means of combined X-ray diffraction procedures-profile fitting and line-broadening analysis-correlated with age, sex, type of tissue (corticalis, spongiosa), and position (superior, middle, and inferior) for different crystallographic directions [length axis using reflection (002), basal plane by means of reflections (300), (210), and (310)], Bone specimens within age group 0-30 were strongly affected by an increased crystallinity in the direction of the c-axis (domain size increasing by 5-7 nm, strain decreasing respectively), whereas in the direction of the a-axis crystallinity decreased significantly (domain size shortening by 5-7 nm, strain increasing respectively) in correlation with same heteroionic substitutions within the apatitic structure, Within age group 30-80 a certain balance seemed to exist between processes of ordering and disordering such that statistically only a slight increase of crystallinity within the basal plane was observed, Age as main fixed effect was highly significant for all investigated parameters, Crystallinity was well correlated with type of tissue (corticalis, spongiosa) in the direction of the length axis of the bone crystallite.