Morphological variations of the human talus investigated using three-dimensional geometric morphometrics
Morphological variations of the human talus investigated using three-dimensional geometric morphometrics
复制标题
使用三维几何形态测量学研究人类距骨的形态变化
DOI：
10.1002/ca.23588
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发表时间：
2020
期刊：
影响因子：
2.4
通讯作者：
Ogihara Naomichi
中科院分区：
文献类型：
--
作者：
Nozaki Shuhei;Watanabe Kota;Kamiya Tomoaki;Katayose Masaki;Ogihara Naomichi
简介距骨的形状决定了行走时距下关节、距舟关节和距小腿关节的位置和运动学特征。因此，对人类距骨性别二态性模式的详细了解可能有助于揭示足部和膝部疾病的发病机制，这些疾病在女性中更为普遍。本研究的目的是利用几何形态计量学来表征和可视化与性别和年龄相关的距骨的三维形状变化。材料和方法本研究使用了没有距骨损伤或疾病的 56 英尺的计算机断层扫描图像。在距骨骨模型上识别了 37 个解剖标志，以计算样本之间形状变化的主成分 (PC)。比较两性之间的PC评分，并调查其与年龄的相关性。结果女性距骨颈较长，头部宽度较男性距骨窄。女性的上滑车在额状面上更加侧向倾斜。此外，女性距骨头在背跖方向上更扭曲、更拉长。结论女性距骨的形态特征可以改变行走过程中距下关节和距舟关节的运动学，可能是足部和膝部疾病发病机制的结构因素。这项研究有助于全面了解人类距骨的形状变化。
IntroductionThe shape of the talus determines the positional and kinematic features of the subtalar, talonavicular, and talocrural joints during walking. Thus, detailed knowledge of the pattern of sexual dimorphism of the human talus may be useful for revealing the pathogenetic mechanism of foot and knee disorders, which are more prevalent in females. The aim of this study was to characterize and visualize the three‐dimensional shape variations of the talus in relation to sex and age using geometric morphometrics.Materials and methodsComputed tomography images of 56 feet without talar injuries or disorders were used in this study. Thirty‐seven anatomical landmarks were identified on a bone model of the talus to calculate principal components (PCs) of shape variations among specimens. PC scores were compared between sexes, and their correlations with age were also investigated.ResultsThe female talus had a longer neck and narrower head width than the male talus. The superior trochlea was tilted more laterally in the frontal plane in females. Furthermore, the female talar head was more twisted and was more elongated in the dorsoplantar direction.ConclusionsMorphological features of the talus in females could alter the subtalar and talonavicular joint kinematics during walking and could be a structural factor in the pathogenetic mechanism underlying foot and knee disorders. This study contributes to the comprehensive understanding of shape variations in the human talus.