前臂旋转对手腕曲和伸展肌肉活动的影响
Kazuhiro Ikeda1,2, Koji Kaneoka3, Naoto Matsunaga4
1Department of Orthopedic Surgery, Kikkoman General Hospital, Noda-city, Chiba-Pref., Japan.
Journal of orthopaedic surgery and research
|January 17, 2025
概括
前臂旋转会影响手腕肌肉活动,可能会增加肌的压力. 在手腕伸展和曲过程中,特定的前臂位置可能是表炎 (网球或高尔夫球员) 的生物机械风险因素.
科学领域:
- 生物力学 生物力学
- 人类解剖学 人类解剖学
- 运动医学 运动医学
背景情况:
- 前臂肌肉协调手腕运动,活动受到前臂旋转的影响.
- 前臂旋转在侧侧和中侧尾炎中的作用的生物力学基础尚不清楚.
- 了解前臂位置的肌肉活动对于阐明肌病发展至关重要.
研究的目的:
- 为了研究手腕关键肌肉在不同前臂位置 (pronation,中性,supination) 的电肌图学活动.
- 为了确定前臂旋转如何影响手腕延伸和曲期间的肌肉激活.
- 探索导致肌病的生物力学因素,如侧面和中部尾炎.
主要方法:
- 表面电肌图 (EMG) 用于40个健康的上肢.
- 肌肉强度和EMG活性是在中性位置最大自愿收缩时测量.
- 在恒定的手腕扭矩下评估EMG活动,跨越前臂位置的pronation,中立和supination.
主要成果:
- 在手腕伸展过程中,扩展器carpi radialis brevis在前臂伸展中表现出增加的激活.
- 在手腕曲过程中, flexor carpi radialis的激活在前臂俯卧时增加,而 flexor carpi ulnaris的伸缩则减少.
- 前臂旋转显著改变了特定手腕肌肉的激活模式.
结论:
- 在某些前臂位置增加肌肉激活可能会提高肌的引力,从而构成肌病变的生物力学风险.
- 这些发现支持前臂旋转与横侧和中侧桃体炎的病理生理学之间的联系.
- 这项研究为手腕生物力学和肘部肌病变的发展提供了宝贵的见解.
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