相关实验视频
Updated: Jun 4, 2025

10:09
Biomechanical Testing of Murine Tendons
Published on: October 15, 2019
13.3K
双头骨神经神经瘤的机械特性
Emmanuel Ocran1, Michele Oliver1, Anne Agur2
1School of Engineering, University of Guelph, Guelph, Ontario, Canada.
Journal of the mechanical behavior of biomedical materials
|January 2, 2025
概括
双头骨神经元 (BA) 对于双头骨的功能至关重要,但其机械性质尚不清楚. 这项研究量化了BA的机械特性,在原纤维对齐沿线发现了更大的刚性,有助于远距离双肩修复模型.
科学领域:
- 生物力学 生物力学
- 整形外科手术 整形外科手术
- 人类解剖学 人类解剖学
背景情况:
- 双臂肌肌对于上肢活动至关重要,其远距离肌过渡到双头肌 (BA).
- BA在稳定远部肌,前臂置和保护神经血管结构方面发挥着作用,但其机械性质仍然未得到量化.
- 了解BA的机械行为对于开发远距离双肩损伤和手术修复的准确模型至关重要.
研究的目的:
- 量化双头骨神经系统 (BA) 的机械性质.
- 为未来远距离双肩肌修复的计算模型提供必要的生物力学数据.
- 提供关于BA在上肢功能期间的负载共享能力的见解.
主要方法:
- 使用Cellscale双轴测试机器测试了8个新鲜冷的双轴神经瘤 (BA) 标本.
- 从BA的近端,中端和远端区域采集样本,并在双轴条件下进行测试.
- 这项研究通过将原纤维与测试器的X轴对齐来测量弹性模量,并应用正弦预条件和加坡双轴测试.
主要成果:
- 在纵向方向上,弹性模量值显著更高,这与BA.内原纤维的方向相对应.
- 量化的机械性能为生物机械建模提供了关键的输入参数.
- 这些数据突出显示了双头骨神经瘤的异型性质.
结论:
- 首次成功量化了双脚神经症 (BA) 的机械性质.
- 这些发现表明,BA沿其纵轴更为硬,在那里原纤维是对齐的.
- 这项研究为改善外科手术规划和远距离双肩损伤和修复的生物机械建模提供了关键数据.
相关概念视频
Gross Anatomy of Skeletal Muscles
11.7K
The connective tissues play a significant role in arranging the muscle fibers into a hierarchical structure that forms a complete muscle. Consider a muscle like the bicep brachii, commonly called the bicep. This muscle comprises thousands of muscle fibers enclosed by a protective layer of connective tissue called the endomysium. The endomysium is primarily composed of reticular fibers, a type of thin collagen fiber. It allows the exchange of nutrients and waste products at the fiber level,...
11.7K
Bones of the Upper Limb: Humerus
2.9K
The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
2.9K
Muscles that Move the Forearm
1.3K
The muscles that move the forearms can be divided into four groups: forearm flexors, forearm extensors, forearm pronators, and forearm supinators. The flexors and extensors act on the elbow joint, while the pronators and supinators act on the radioulnar joints.
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
1.3K
Muscles of the Forearm that Move the Hand and Fingers
839
The muscles of the forearm that move the wrist, hand, and digits are numerous and diverse. They can be classified into two groups based on their location and function — the anterior and posterior compartment muscles.
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi...
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi...
839
Bones of the Upper Limb: Ulna
2.0K
The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side...
2.0K
Bones of the Upper Limb: Radius
2.1K
The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a...
The radius has a nail-shaped head, and a...
2.1K

