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Investigation of pelvic symmetry: A systematic analysis using computer aided design software
Qiubao Zheng1,2, Kangshuai Xu3, Xiaorui Zhan4
1The Third Affiliated Hospital of Southern Medical University Guangzhou China.
Health Care Science
|June 28, 2024
Summary
The Chinese pelvis exhibits high bilateral symmetry, with deviations mainly at muscle attachment sites. This finding supports using contralateral pelvic models for custom implants in fracture and bony destruction treatments.
Area of Science:
- Anatomy
- Biomedical Engineering
- Orthopedics
Background:
- Pelvic symmetry is crucial for designing patient-specific implants.
- Understanding Chinese pelvic morphology aids in orthopedic surgery and implant design.
Purpose of the Study:
- To investigate the bilateral symmetry of the Chinese pelvis.
- To assess the potential of using contralateral pelvic models for custom implant creation.
Main Methods:
- Computed tomography (CT) scans of 50 Chinese pelvises were used to create 3D models.
- Symmetry analysis was performed by reflecting the left pelvic side and aligning it with the right side.
- Volume, surface area, and deviations were measured using specialized software.
Main Results:
- High bilateral symmetry was observed, with a mean standard deviation of 1.15 ± 0.16 mm.
- 90.82% of deviations were within the permissible ±2 mm range.
- Asymmetry was localized to muscle/ligament attachment sites and sacroiliac joints; no significant differences in volume or surface area were found between sides, nor in relation to age or sex.
Conclusions:
- The Chinese pelvis demonstrates significant bilateral symmetry.
- Contralateral pelvic models can be reliably used for creating patient-specific implants.
- This approach is applicable for treating pelvic fractures and bony destruction.
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