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相关概念视频

Muscles of the Shoulder01:23

Muscles of the Shoulder

4.0K
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...
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Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

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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...
3.3K
Muscles that Move the Arm01:31

Muscles that Move the Arm

1.9K
Nine muscles are involved in arm movements. Two of these, the pectoralis major and latissimus dorsi, originate from the axial skeleton and are called axial muscles. The other seven originate from the scapula and are called the scapular muscles.
The pectoralis major has two origins. Its clavicular head originates on the medial half of the clavicle. In contrast, the sternocostal head originates on the costal cartilages of ribs 1-6, the sternum, and the aponeurosis of the external oblique of the...
1.9K
Knee Joint01:23

Knee Joint

1.9K
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
1.9K
Development of the Limb Synovial Joints01:07

Development of the Limb Synovial Joints

1.4K
Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilage, and connective tissues of the body is called mesenchyme.
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
1.4K
Joints01:26

Joints

33.0K
Joints, also called articulations or articular surfaces, are points at which ligaments or other tissues connect adjacent bones. Joints permit movement and stability, and can be classified based on their structure or function.
Structural joint classifications are based on the material that makes up the joint as well as whether or not the joint contains a space between the bones. Joints are structurally classified as fibrous, cartilaginous, or synovial.
Fibrous Joints Are Immovable
The bones of a...
33.0K

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相关实验视频

Updated: Jul 21, 2025

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
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Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

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在投运动中的肩关节复合体.

W Ben Kibler1, Aaron D Sciascia2, W Jeff Grantham1

  • 1Shoulder Center of Kentucky, Lexington Clinic, Lexington, KY, USA.

Journal of shoulder and elbow surgery
|July 27, 2023
PubMed
概括
此摘要是机器生成的。

顶部运动员依靠脚皮节奏 (SHR) 进行有效的投. 变化,称为脚肌动力障碍,损害肩部功能,增加受伤风险,需要全面的临床评估.

关键词:
肩膀 肩膀 在肩膀上考试 考试 考试 考试机械学 机械学 机械学在空中运动员运动员.肩膀骨 肩膀骨 是一个脚和部节奏 脚和部节奏

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科学领域:

  • 整形外科 整形外科 整形外科
  • 运动医学 运动医学
  • 生物力学 生物力学

背景情况:

  • 运动员的肩关节综合体促进了力量的转移,并保护他们免受高速,高负荷的运动.
  • 骨节律 (SHR),骨,关节骨和骨的联合运动,对于有效的头部功能至关重要.
  • 在SHR的偏差可能会损害肩膀功能,并提高投运动员受伤的风险.

研究的目的:

  • 为了阐明在空投过程中肩部复合体的生物力学合.
  • 定义脚肌动力障碍是指脚肌运动障碍及其对SHR的影响.
  • 概述一个系统的临床评估,用于识别空投运动员的缺陷.

主要方法:

  • 对关节骨,护甲骨和护甲骨运动的4个阶段的分析,加上臂部升高和部运动.
  • 标识头巾动症,其特点是头巾延伸和状腺抗.
  • 审查影响空投任务有效性的因素,包括部运动参数和关节稳定性.

主要成果:

  • 在SHR中发生的变化,称为脚肌动力障碍,与脚肌延伸,状腺抗,改变部旋转和部后部头部转移有关.
  • 这可能会导致内部冲击和腔压缩减少,损害肩关节的稳定性.
  • 状腔损伤是常见的缺陷,影响腔压缩和稳定性.

结论:

  • 骨功能障碍是影响SHR和增加头部运动员受伤风险的关键障碍.
  • 综合性临床评估,解决近位和远位因素,对于诊断和治疗这些缺陷至关重要.
  • 干预方案应针对已确定的病理解剖学,病理生理学和病理机械问题,以恢复功能.