Study on the application of inertia principal axis in the precise positioning of the radial tuberosity&nbsp;

doi:10.13418/j.issn.1001-165x.2022.2.10

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Chinese Journal of Clinical Anatomy ›› 2022, Vol. 40 ›› Issue (2) : 168-172. DOI: 10.13418/j.issn.1001-165x.2022.2.10

Study on the application of inertia principal axis in the precise positioning of the radial tuberosity

Wang Fasheng, Chen Jie, Xie Yun*

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Abstract

Objective　To determine the rotation angle of the radial tuberosity relative to the major axis of the radius at the horizontal plane according to theits computed tomography(CT) image.　Methods　CT images of 44 independent radial specimens (17 on the left and 27 on the right) were scanned to observe the morphology of the radial tuberosity and select the marker points from it. The Mimics21.0 was used to construct the radial three-dimensional (3D) model based on the original CT image information. Then the inertia principal axis of radial was calculated and generated, and the reference coordinate frame of inertia principal axis was established. The rotation angles of the posterior ridge marks on the radial tuberosity on the horizontal plane relative to the major axis in each specimen were calculated and recorded.　Results　The posterior ridge of radial tuberosity was ubiquitous. The relative position between inertia principal axis and radius was stable. The rotation angle of the posterior ridge of the radial tuberosity relative to the major axis of the radius in the horizontal coordinate frame was (82.93±5.55)°.　Conclusions　The anatomical reference coordinate frame based on the principal axis of inertia is stable and can be used to precisely locate the radial tuberosity.

Key words

/ Radial tuberosity / 　Inertia principal axis / 　Anatomical reference coordinate frame

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Wang Fasheng, Chen Jie, Xie Yun. Study on the application of inertia principal axis in the precise positioning of the radial tuberosity [J]. Chinese Journal of Clinical Anatomy. 2022, 40(2): 168-172 https://doi.org/10.13418/j.issn.1001-165x.2022.2.10

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