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Health Care Science 2023, 2(1): 36-44 https://doi.org/10.1002/hcs2.25
Original Article | Open Access | Issue | Published: 08 November 2022

Investigation of pelvic symmetry: A systematic analysis using computer aided design software

Show Author's Information Qiubao Zheng1,2,  Kangshuai Xu3,  Xiaorui Zhan4,  Fuming Huang5,  Liping Wang6,  Sheqiang Chen1,  Jiacheng Li1,  Cheng Yang1( ),  Yuhui Chen1( ),  Shicai Fan1( )
The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
Panyu Central Hospital, Guangzhou, China
Department of Orthopedics, Jinhua Municipal Central Hospital, Jinhua, China
Huizhou First People's Hospital, Huizhou, China
Maoming People's Hospital, Maoming, China
University of South Australia, Adelaide, South Australia, Australia

Qiubao Zheng, Kangshuai Xu, Xiaorui Zhan, and Fuming Huang contributed equally to this work.

Keywords:
surgical planning, 3D models, deviation analysis, pelvis, symmetry
Cite this article:
Zheng Q, Xu K, Zhan X, et al. Investigation of pelvic symmetry: A systematic analysis using computer aided design software. Health Care Science, 2023, 2(1): 36-44. https://doi.org/10.1002/hcs2.25
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Abstract Full text About this article
Objectives

This study aimed to investigate the symmetry of the Chinese pelvis.

Methods

Computed tomography scan images of each of 50 Chinese pelvises were converted to 3D models and the left sides of the pelvises were reflected on Mimics software. Then, the reflected left side model was aligned with the right side using the closest point algorithm function of Geomagic software to perform symmetry analysis. The volume and surface area of either side of the pelvises were also calculated. The mean standard deviation (SD), the mean percentage of permissible deviations within the ±2 mm range, the percentage differences in volume and surface area were measured to compare pelvic symmetry. In addition, the distribution of pelvic bilateral symmetry associated with both age and sex were compared.

Results

The mean SD was 1.15 ± 0.16 mm and the mean percentage of permissible deviations was 90.82% ± 4.67%. The deviation color maps showed that the specific areas of asymmetry were primarily localized to major muscle or ligament attachment sites and the sacroiliac joint surfaces. There was no significant difference between the bilateral sides of the pelvis in either volume or surface area. Additionally, no difference in any indexes was exhibited in relation to sex and age distribution.

Conclusion

Our results demonstrated that the pelvis has high bilateral symmetry, which confirmed the potential of using contralateral pelvic models to create fully patient‐specific and custom‐made pelvic implants applicable for the treatment of fracture and bony destruction.


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Abstract
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About this article

Investigation of pelvic symmetry: A systematic analysis using computer aided design software

Show Author's information Qiubao Zheng1,2, Kangshuai Xu3, Xiaorui Zhan4, Fuming Huang5, Liping Wang6, Sheqiang Chen1, Jiacheng Li1, Cheng Yang1( ), Yuhui Chen1( ), Shicai Fan1( )
The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
Panyu Central Hospital, Guangzhou, China
Department of Orthopedics, Jinhua Municipal Central Hospital, Jinhua, China
Huizhou First People's Hospital, Huizhou, China
Maoming People's Hospital, Maoming, China
University of South Australia, Adelaide, South Australia, Australia

Qiubao Zheng, Kangshuai Xu, Xiaorui Zhan, and Fuming Huang contributed equally to this work.

Abstract

Objectives

This study aimed to investigate the symmetry of the Chinese pelvis.

Methods

Computed tomography scan images of each of 50 Chinese pelvises were converted to 3D models and the left sides of the pelvises were reflected on Mimics software. Then, the reflected left side model was aligned with the right side using the closest point algorithm function of Geomagic software to perform symmetry analysis. The volume and surface area of either side of the pelvises were also calculated. The mean standard deviation (SD), the mean percentage of permissible deviations within the ±2 mm range, the percentage differences in volume and surface area were measured to compare pelvic symmetry. In addition, the distribution of pelvic bilateral symmetry associated with both age and sex were compared.

Results

The mean SD was 1.15 ± 0.16 mm and the mean percentage of permissible deviations was 90.82% ± 4.67%. The deviation color maps showed that the specific areas of asymmetry were primarily localized to major muscle or ligament attachment sites and the sacroiliac joint surfaces. There was no significant difference between the bilateral sides of the pelvis in either volume or surface area. Additionally, no difference in any indexes was exhibited in relation to sex and age distribution.

Conclusion

Our results demonstrated that the pelvis has high bilateral symmetry, which confirmed the potential of using contralateral pelvic models to create fully patient‐specific and custom‐made pelvic implants applicable for the treatment of fracture and bony destruction.

Keywords: surgical planning, 3D models, deviation analysis, pelvis, symmetry

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Publication history
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Publication history

Received: 18 July 2022
Accepted: 27 September 2022
Published: 08 November 2022
Issue date: February 2023

Copyright

© 2022 The Authors. Health Care Science published by John Wiley & Sons Ltd on behalf of Tsinghua University Press.

Acknowledgements

ACKNOWLEDGMENTS

We thank International Science Editing (http://www.internationalscienceediting.com) for editing this manuscript. This study was funded by Clinical Research Startup Program of Southern Medical University by High‐level University Construction Funding of Guangdong Provincial Department of Education, grand/award number: LC2016ZD032. National Natural Science Foundation of China, grand/award number: 81772428 and grand/award number: 82072411. Special Program of Guangdong Frontier and Key Technological Innovation, grand/award number: 2015B010125006. Innovation fund cultivation project of National Clinical ResearchCenter for Orthopedics Sports Medicine & Rehabilitation (2021‐NCRC‐CXJJ‐PY‐06).

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