Biomechanical study of lumbar vertebra during gait cycle in adolescent idiopathic scoliosis.
10.7507/1001-5515.202410010
- Author:
Yunxin WANG
1
;
Ping XU
1
;
Yingsong WANG
2
;
Yingliang LIU
2
;
Shisen XU
1
;
Zhi ZHAO
2
;
Hongfei LI
3
;
Xiaoming CHEN
4
Author Information
1. Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650504, P. R. China.
2. Department of Orthopedics, the Second Affiliated Hospital of Kunming Medical University, Kunming 650101, P. R. China.
3. Department of Orthopedics, Traditional Chinese Medicine Hospital of Chuxiong Yi Autonomous Region, Chuxiong, Yunnan 675000, P. R. China.
4. Department of Radiology, Guidong People's Hospital of Guangxi Zhuang Autonomous Region, Wuzhou, Guangxi 543001, P. R. China.
- Publication Type:Journal Article
- Keywords:
Adolescent idiopathic scoliosis;
Biomechanics;
Finite element;
Lumbar vertebra
- MeSH:
Humans;
Lumbar Vertebrae/diagnostic imaging*;
Scoliosis/diagnostic imaging*;
Adolescent;
Gait/physiology*;
Biomechanical Phenomena;
Tomography, X-Ray Computed;
Stress, Mechanical;
Female;
Male
- From:
Journal of Biomedical Engineering
2025;42(3):601-609
- CountryChina
- Language:Chinese
-
Abstract:
In order to investigate the mechanical response of lumbar vertebrae during gait cycle in adolescents with idiopathic scoliosis (AIS), the present study was based on computed tomography (CT) data of AIS patients to construct model of the left support phase (ML) and model of the right support phase (MR), respectively. Firstly, material properties, boundary conditions and load loading were set to simulate the lumbar vertebra-pelvis model. Then, the difference of stress and displacement in the lumbar spine between ML and MR was compared based on the stress and displacement cloud map. The results showed that in ML, the lumbar stress was mostly distributed on the convex side, while in MR, it was mostly distributed on the concave side. The stress of the two types of stress mainly gathered near the vertebral arch plate, and the stress of the vertebral arch plate was transmitted to the vertebral body through the pedicle with the progress of gait. The average stress of the intervertebral tissue in MR was greater than that in ML, and the difference of stress on the convex and convex side was greater. The displacement of lumbar vertebrae in ML decreased gradually from L1 to L5. The opposite is true in MR. In conclusion, this study can accurately quantify the stress on the lumbar spine during gait, and may provide guidance for brace design and clinical decision making.
