肘部姿势对双肩功能在肩膀出生损伤的作用:一个计算灵敏度分析
T R Goins1, Jane E Sullivan2, John Fox3
1Campbell University Doctor of Physical Therapy Program, Buies Creek, NC, United States of America.
Clinical biomechanics (Bristol, Avon)
|February 4, 2026
概括
在特定的位置稳定肘部增强肩部升高强度的人与手臂出生伤害. 这一发现为改善手臂功能提供了新的治疗方法.
科学领域:
- 生物力学 生物力学
- 人类运动科学科学 人类运动科学
- 康复工程 康复工程 康复工程
背景情况:
- 臂出生损伤改变了肌肉长度和关节运动,影响了肩部的升高.
- 由于其双关节性质和在这个人群中减少的最佳长度,双肩的长头是至关重要的.
- 关节固定可能会增强双关节肌肉的力量产生能力.
研究的目的:
- 为了研究肘部关节稳定如何影响肩部升高等比矩产生能力.
- 为了分析改变最佳纤维长度对双肩长头的影响,积极和被动纤维力.
- 探索手臂出生损伤治疗干预的生物力学优势.
主要方法:
- 使用了肌肉骨模型模拟.
- 预测最大的等比肩部升高时刻,主动纤维力和被动纤维力.
- 模拟稳定肘部姿势 (10°120°) 和各种最佳肌肉长度 (0%30%的减少).
主要成果:
- 最佳的肩部升高时刻是最高的,双肩长头的最佳纤维长度减少了30%.
- 在30°的肘部稳定产生了最大的肩部升高时刻.
- 这种特定的姿势导致了较低的活性纤维力,但更高的被动纤维力.
结论:
- 肘部固定在特定的姿势可以生物力学增强肩部升高.
- 这些发现为开发针对手臂出生损伤的有针对性的治疗策略提供了基础.
- 了解这些生物力学原理是改善功能结果的关键.
相关概念视频
Birth Control Methods
6.8K
Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although...
6.8K
Muscles of the Shoulder
9.2K
The muscles surrounding the shoulder girdle, including the clavicle and scapula, primarily stabilize the scapula. This stable base allows other muscles to move the humerus effectively. Scapular movements often mirror those of the humerus and extend its range of motion. For instance, raising the arm above the head would not be feasible without simultaneous upward rotation of the scapula.
Anterior Thoracic Muscles
The anterior thoracic muscles include the serratus anterior, subclavius, and...
Anterior Thoracic Muscles
The anterior thoracic muscles include the serratus anterior, subclavius, and...
9.2K
Spinal Nerves: Plexus I
2.8K
Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
2.8K
Spinal Nerves: Plexus II
2.5K
The plexuses of the lower body include the lumbar, sacral, and coccygeal plexuses, which innervate the abdomen, pelvis, legs, and coccygeal region. These plexuses control the transmission of sensory information and coordinate motor functions of the lower body.
The Lumbar Plexus
The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including the...
The Lumbar Plexus
The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including the...
2.5K
Computed Tomography
8.7K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
8.7K
Assessment of blood pressure in brachial artery(one-step method)
1.2K
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
Prepare for the Procedure:
1.2K


