The Kinematic and Kinetic Responses of the Trunk and Lower Extremity Joints during Walking with and without the Spinal Orthosis

Chenyan Wang, Xiaona Li, Yuan Guo, Weijin Du, Hongmei Guo and Weiyi Chen
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Chenyan Wang: College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Xiaona Li: College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Yuan Guo: College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Weijin Du: College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Hongmei Guo: College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Weiyi Chen: College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

IJERPH, 2022, vol. 19, issue 11, 1-12

Abstract: Spinal orthoses are an effective option for restoring the spine to its original position and controlling poor posture. However, the effects of poor posture and spinal orthoses on the kinematics and kinetics of trunk and lower extremity joints remain unclear. A six-camera Vicon motion capture system and two AMTI force plates were employed to collect gait parameters, including joint angle (spine, thorax, hip, knee, and ankle), range of motion (ROM), and ground reaction forces (GRFs). Furthermore, joint moments and joint reaction forces (JRFs) were calculated using a full-body musculoskeletal model in OpenSim. One-way repeated-measures ANOVA ( p < 0.05) was used to compare significant differences among three trial conditions. These three conditions were walking in a normal posture, poor posture, and spinal orthosis. The results showed that spine ROM in the coronal and transverse plane was significantly lower when walking with a spinal orthosis compared to walking in normal and poor posture ( p < 0.05). Compared to normal posture, the lumbar moments and back compressive forces were significantly increased when walking in poor posture ( p < 0.05). However, when walking with a spinal orthosis, there was a significant decrease in trunk moments and reaction forces compared to walking in poor posture ( p < 0.05). Individuals with poor posture could potentially induce instability and disorders, as evidenced by an increase in trunk moments and JRF compared to the normal posture. Spinal orthosis not only restricts spine ROM but also reduces the load on the spine and thus increases balance and stability.

Keywords: gait; poor posture; spinal orthosis; musculoskeletal modeling (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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