基于x射线成像的人手几何形态计量学分析

A. Ermolenko
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引用次数: 0

摘要

目前,在人类中,食指和无名指的比例(2D:4D比)决定了手的形态类型:1型或桡型(2D>4D), 2型或中性型(2D=4D), 3型或尺型(2D<4D)。然而,上述差异不允许手形状作为一个整体的形态学验证。该研究的目的是检查手的形状取决于其形态基于放射图像与几何形态测量方法。材料和方法。几何形态测量包括对50名男性和50名女性的数字放射图像(前后投影)上的20个地标所描述的右手形状进行分析。通过视觉评估,根据食指比无名指长、等于或短来对每只手进行分类。研究揭示了不同手型在横向上的差异,即尺骨型(U)的手较宽,而桡骨型(R)的手较窄。与其他两种类型不同,中性形状的手更像椭圆形。平均而言,手的形状取决于形态类型。最明显的形状变化是由于掌骨在横向上的几何形状,以及由于II, IV和V指在纵向上的几何形状。桡骨(R)-尺骨(N)型手组与尺骨(U)型手组在宽度上存在组间差异,桡骨(R)-尺骨(U)型手组与中性(N)型手组在长度上存在组间差异。手部形状异速变化最小。研究结果表明,几何形态计量学的潜力,分析人类手的形状和他们的变化取决于形态类型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Geometric Morphometric Analysis of the Human Hand Morphology Based on X-ray Imaging
Currently, in humans, the ratio of the index and ring fingers (2D:4D ratio) determines the morphological type of the hand: type 1 or radial (2D>4D), type 2 or neutral (2D=4D), type 3 or ulnar (2D<4D). However, the above differences do not allow for morphological verification of the hand shape as a whole.The aim of the study was to inspect the hand shapes depending on its morphology based on radiographical images with geometric morphometric methods.Material and methods. Geometric morphometry included an analysis of the right hand shape described by 20 landmarks located on digital radiographic images (anteriorposterior projection) in 50 males and 50 females. Each hand was classified according to whether the index finger was longer, equal to, or shorter than the ring finger by visual assessment.Results. The study revealed differences between the hand shapes in the transverse direction, namely, the hands of the ulnar type (U) were wider, while the hands of the radial type (R) were narrower. The hands of neutral shape, unlike the other two types, were more oval in shape. In average, the hand shape depended on the morphological type. The most pronounced shape transformations were due to the geometry of the metacarpal bones in the transverse direction, and due to the geometry of the II, IV and V fingers in the longitudinal direction. Intergroup differences in width were revealed between the group of hands of radial (R)-neutral (N) types and ulnar (U) type, and in length between the group of hands of radial (R)-ulnar (U) types and neutral (N) type. The allometry of the hand shape was minimal.Conclusion. The results of the study demonstrate the potentials of geometric morphometry for analysis of the human hand shapes and their variability depending on the morphological type.
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