College of Mechanical Engineering, Tianjin University of Science & Technology, No. 1038, Dagu Nanlu, Hexi District, Tianjin, China.
Tianjin Key Lab of Integrated Design and On-line Monitoring for Light Industry & Food Machinery and Equipment, Tianjin, China.
Comput Methods Biomech Biomed Engin. 2021 Oct;24(13):1517-1529. doi: 10.1080/10255842.2021.1898601. Epub 2021 Mar 14.
Ligaments are the most important stabilizer of elbow. However, the stress of ligaments is hard to measure because of the complex biomechanical environment in the elbow. Our objective was to develop a human elbow finite element model and to validate it by a comparison with previous experimental data. Then several different ligaments injury conditions and elbow flexion were simulated to analyse the elbow instability and to stress the biomechanical consequences. The computational investigation of different effects of ligament constraints of elbow was studied by means of finite element analysis. The stress of the anterior bundle was almost greater than other ligaments in all conditions, which played the most important role during the elbow flexion. The posterior bundle was the secondary stabilizer during flexion after the anterior bundle. The lateral ulnar collateral ligament (LUCL) injury could result in an increase of the ulnar cartilage stress. The anterior bundle and the LUCL were recommended to be repaired in elbow joint dislocations and fractures. This study could help understand the dynamic effects of ligaments on the joint over the entire extension by investigating the tissue stress.
韧带是肘部最重要的稳定器。然而，由于肘部复杂的生物力学环境，韧带的应力很难测量。我们的目的是开发一个人类肘部有限元模型，并通过与以前的实验数据进行比较来验证它。然后模拟几种不同的韧带损伤情况和肘部弯曲，以分析肘部不稳定并强调生物力学后果。通过有限元分析研究了不同的肘部韧带约束效果的计算研究。在前束的所有条件下，其应力几乎都大于其他韧带，在前束期间发挥了最重要的作用。在前束之后，后束在弯曲过程中是次要的稳定器。外侧尺侧副韧带 (LUCL) 损伤可导致尺侧软骨应力增加。建议在前束和 LUCL 在肘关节脱位和骨折时进行修复。这项研究可以通过研究组织应力来帮助理解韧带在整个伸展过程中对关节的动态影响。
