The elbow is the load-bearing joint during arm swing.

IF 1.8 Q2 ORTHOPEDICS Clinics in Shoulder and Elbow Pub Date : 2023-06-01 DOI:10.5397/cise.2023.00101

Bokku Kang, Gu-Hee Jung, Erica Kholinne, In-Ho Jeon, Jae-Man Kwak

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引用次数: 5

Abstract

Background: Arm swing plays a role in gait by accommodating forward movement through trunk balance. This study evaluates the biomechanical characteristics of arm swing during gait.

Methods: The study performed computational musculoskeletal modeling based on motion tracking in 15 participants without musculoskeletal or gait disorder. A three-dimensional (3D) motion tracking system using three Azure Kinect (Microsoft) modules was used to obtain information in the 3D location of shoulder and elbow joints. Computational modeling using AnyBody Modeling System was performed to calculate the joint moment and range of motion (ROM) during arm swing.

Results: The mean ROM of the dominant elbow was 29.7°±10.2° and 14.2°±3.2° in flexion-extension and pronation-supination, respectively. The mean joint moment of the dominant elbow was 56.4±12.7 Nm, 25.6±5.2 Nm, and 19.8±4.6 Nm in flexion-extension, rotation, and abduction-adduction, respectively.

Conclusions: The elbow bears the load created by gravity and muscle contracture in dynamic arm swing movement.

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在手臂摆动时，肘部是承重关节。

背景:手臂摆动通过躯干平衡调节向前运动，在步态中起作用。本研究评估了步态中手臂摆动的生物力学特征。方法:该研究对15名没有肌肉骨骼或步态障碍的参与者进行了基于运动跟踪的计算肌肉骨骼建模。采用三个Azure Kinect (Microsoft)模块的三维(3D)运动跟踪系统来获取肩关节和肘关节的三维位置信息。利用任何建模系统进行计算建模，计算手臂摆动时的关节力矩和运动范围。结果:主肘屈伸和旋前活动的平均关节活动度分别为29.7°±10.2°和14.2°±3.2°。优势肘关节屈伸、旋转和外展内收的平均关节力矩分别为56.4±12.7 Nm、25.6±5.2 Nm和19.8±4.6 Nm。结论:在动态臂摆运动中，肘部承受重力和肌肉挛缩造成的负荷。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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