Three-dimensional morphological analysis of the human sacroiliac joint: influences on the degenerative changes of the auricular surfaces
Three-dimensional morphological analysis of the human sacroiliac joint: influences on the degenerative changes of the auricular surfaces
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DOI：
10.1111/joa.12765
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发表时间：
2018-02-01
影响因子：
2.4
通讯作者：
Saiki, Kazunobu
中科院分区：
文献类型：
--
作者：
Nishi, Keita;Tsurumoto, Toshiyuki;Saiki, Kazunobu
骶髂关节（SIJ）负责脊柱和下肢之间的重量传递。然而，SIJ的结构和功能的细节仍然不清楚。在以前的研究中，我们设计了一种方法，定量评估的退化水平的SIJ使用年龄估计程序的耳状表面的髂骨。我们在该研究中的结果表明，关节表面的退变程度可能与髂骨耳状面的形态有关。然而，在该研究中，髂骨耳状表面的形态被简化用于分析，这意味着未来需要更详细的研究。在本研究中，我们专注于SIJ形状的个体差异，并对髂骨耳状面的形态进行了三维定量评价，以确定其与关节退变的关系。我们制作了100名现代日本男性（年龄19-83岁）髂骨右耳表面的三维图像，并获得了11个定义测量点的三维直角坐标。然后，我们从这些测量点的三维直角坐标中计算出16个参数，这些参数表示髂骨耳状表面的形态特征，并使用这些参数进行主成分分析，以调查髂骨耳状表面形态的趋势。我们发现，髂骨耳状面的形态特征可以用（i）大小，（ii）后缘的宽度和（iii）起伏的数量来描述。这些参数和年龄之间的相关性的调查表明，髂骨的耳状面的起伏量往往会随着年龄的增长而减少。在对髂骨耳状面形态与关节面退变之间关系的研究中，将受试者分为高度退变组（n = 55）和低度退变组（n = 45），并比较16个参数，结果发现髂骨耳状面的波动量存在显著差异。在一项仅限于死亡时年龄≥ 60岁的老年受试者（n = 47）的研究中，高度退行性变组（n = 27）和低度退行性变组（n = 20）之间不仅在表示髂骨耳状面波动量的参数方面存在显著差异，而且在表示后缘波动量的参数方面也存在显著差异。结果提示，髂骨耳状面的起伏程度可能影响关节面的退变程度。此外，在老年受试者中，SIJ后缘的弯曲程度也可能影响关节面的退变程度。因此，髂骨耳状面形态的差异可能会影响SIJ的退行性变化。
The sacroiliac joint (SIJ) is responsible for weight transmission between the spine and lower extremity. However, details of the structure and function of the SIJ remain unclear. In a previous study, we devised a method of quantitatively evaluating the level of degeneration of the SIJ using an age estimation procedure for the auricular surface of the ilium. Our results in that study suggested that the degree of degeneration of the joint surface may be associated with the morphology of the auricular surface of the ilium. In that study, however, the morphology of the auricular surface of the ilium was simplified for analysis, meaning that more detailed investigations were required in future. In the present study, we focused on individual differences in the shape of SIJ and carried out three-dimensional quantitative evaluation of the morphology of the auricular surface of the ilium to ascertain its association with joint degeneration. We produced three-dimensional images of the right auricular surfaces of the ilium of 100 modern Japanese men (age 19-83), and obtained the three-dimensional rectangular coordinates of 11 defined measurement points. We then calculated 16 parameters indicating the morphological characteristics of the auricular surfaces of the ilium from the three-dimensional rectangular coordinates of these measurement points, and used these to perform principal component analysis to investigate trends in the morphology of the auricular surface of the ilium. We found that the morphology of the auricular surface of the ilium could be characterized in terms of (i) size, (ii) concavity of the posterior border and (iii) amount of undulation. An investigation of the correlation between these parameters and age suggested that the amount of undulation of the auricular surface of the ilium tends to diminish with advancing age. In an investigation of the association between morphology of the auricular surface of the ilium and degeneration of the articular surface when the subjects were divided into a high-degeneration group (n = 55) and a low-degeneration group (n = 45) and the 16 parameters were compared, there was a significant difference in the amount of undulation of the auricular surface of the ilium. In an investigation limited to older subjects aged >= 60 (n = 47) at the time of death, there were significant differences between the high-degeneration group (n = 27) and low-degeneration group (n = 20) in terms not only of the parameters indicating the amount of undulation of the auricular surface of the ilium but also of those indicating the amount of the concavity of the posterior border. These results suggested that the amount of undulation of the auricular surface of the ilium may affect the degree of degeneration of the articular surface. In addition, in older subjects, the degree of concavity of the posterior border of the SIJ may also affect the degree of degeneration of the articular surface. It is thus likely that differences in the morphology of the auricular surface of the ilium may affect degenerative changes in the SIJ.