A morphological description of the humerus based on statistical shape model
10.3969/j.issn.1006-7795.2025.05.001
- VernacularTitle:基于统计形状模型的肱骨形态学描述研究
- Author:
Weilu GAO
1
;
Zhengfeng JIA
;
Changsen YANG
;
Jiantao LI
;
Xiuyun SU
;
Licheng ZHANG
Author Information
1. 中国人民解放军总医院骨科医学部,北京 100048;国家骨科与运动康复临床医学研究中心,北京 100048;中国人民解放军总医院研究生院,北京 100048
- Publication Type:Journal Article
- Keywords:
humerus;
three-dimensional reconstruction;
anatomical variation;
morphological changes;
statistical shape model;
principal component analysis
- From:
Journal of Capital Medical University
2025;46(5):765-769
- CountryChina
- Language:Chinese
-
Abstract:
Objective To construct a high-precision statistical shape model of the humerus and systematically describe its anatomical variation patterns.Methods In this study,a statistical shape model of the humerus was constructed using the three-dimensional model data of 60 collected humerus cases.The principal component analysis method was adopted to reveal the main patterns of humerus anatomical variations and their contribution rates.Results The results showed that the first five principal components(PC01-PC05)collectively explained 96.6%of the total anatomical variations.Among them,PC01 and PC02 were the main components,contributing 66.6%and 23.5%of the variations respectively.PC01 mainly reflects the scaling effect of the overall size(length/width)of the humerus,while PC02 reveals the length variation characteristics independent of the overall scaling,which may reflect individualized differences.The subsequent principal components(PC03-PC05)depicted the local morphological characteristics and fine changes of the proximal and distal humerus.Conclusion The statistical shape model constructed in this study provides a reliable digital basis for personalized prosthesis design,surgical planning and biomechanical simulation.
