Rapid femur modeling method based on statistical shape model.
10.7507/1001-5515.202111005
- Author:
Zhiwei ZHANG
1
;
Zhenxian CHEN
2
;
Zhifeng ZHANG
3
;
Caimei WANG
4
;
Zhongmin JIN
1
Author Information
1. International Machinery Center, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
2. School of Mechanical Engineering, Chang'an University, Xi'an 710064, P. R. China.
3. The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, P. R. China.
4. Beijing AK Medical Co., LTD, Beijing 102299, P. R. China.
- Publication Type:Journal Article
- Keywords:
Bone geometry;
Rapid modeling;
Statistical shape model;
Three-dimensional reconstruction
- MeSH:
Humans;
Imaging, Three-Dimensional/methods*;
Tomography, X-Ray Computed/methods*;
Femur/surgery*;
Femur Head;
Lower Extremity
- From:
Journal of Biomedical Engineering
2022;39(5):862-869
- CountryChina
- Language:Chinese
-
Abstract:
The geometric bone model of patients is an important basis for individualized biomechanical modeling and analysis, formulation of surgical planning, design of surgical guide plate, and customization of artificial joint. In this study, a rapid three-dimensional (3D) reconstruction method based on statistical shape model was proposed for femur. Combined with the patient plain X-ray film data, rapid 3D modeling of individualized patient femur geometry was realized. The average error of 3D reconstruction was 1.597-1.842 mm, and the root mean square error was 1.453-2.341 mm. The average errors of femoral head diameter, cervical shaft angle, offset distance and anteversion angle of the reconstructed model were 0.597 mm, 1.163°, 1.389 mm and 1.354°, respectively. Compared with traditional modeling methods, the new method could achieve rapid 3D reconstruction of femur more accurately in a shorter time. This paper provides a new technology for rapid 3D modeling of bone geometry, which is helpful to promote rapid biomechanical analysis for patients, and provides a new idea for the selection of orthopedic implants and the rapid research and development of customized implants.
