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相关概念视频

Muscles of the Shoulder01:23

Muscles of the Shoulder

3.9K
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: Radius01:09

Bones of the Upper Limb: Radius

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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...
2.2K
Bones of the Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

3.3K
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
Ultrasonography01:17

Ultrasonography

4.5K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
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Functional Classification of Joints01:09

Functional Classification of Joints

4.2K
Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses  or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An...
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相关实验视频

Updated: Jul 15, 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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基于glenoid的参考系统来区分肩部病理在平面X线图上.

Austin F Smith1, Christian M Schmidt2, Ameer Tabbaa3

  • 1Florida Orthopaedic Institute, Shoulder & Elbow Department, Tampa, FL, USA; OrthoArizona, Phoenix, AZ, USA.

Journal of shoulder and elbow surgery
|September 30, 2023
PubMed
概括

这项研究引入了一种新的方法,使用肩部放射图来测量部头部和状腺之间的几何关系. 这种技术可以准确地区分正常的肩膀和患有骨关节炎或袖口撕裂关节病的肩膀.

关键词:
最适合的圆圈圈.格拉西看到了X射线图.膜部的膜部是如何形成的?状腺体是什么 状腺体部头部 部头部肩膀肩膀,肩膀肩膀,这是一个很大的问题.

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Reverse Total Shoulder Arthroplasty
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Reverse Total Shoulder Arthroplasty

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Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact
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相关实验视频

Last Updated: Jul 15, 2025

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Reverse Total Shoulder Arthroplasty
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Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact
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科学领域:

  • 整形外科手术 整形外科手术
  • 放射学 放射学是一门学科.
  • 生物机械分析分析

背景情况:

  • 肩部X射线图对于诊断病理和计划治疗至关重要.
  • 目前的方法缺乏对部头部 - 状腺关系的定量分析.
  • 为了定义正常和病态的肩膀,提出了一个几何关系假设.

研究的目的:

  • 开发和验证用于肩部放射图的新型几何测量技术.
  • 用最适合的圆来量化部头部和状腺之间的关系.
  • 根据这些测量,区分正常的肩膀,骨关节炎和袖口撕裂关节病.

主要方法:

  • 分析了156个肩膀:53个正常,51个关节骨关节炎 (GHOA),52个袖口撕裂关节病 (CTA).
  • 通过使用特定的几何规则,定义了部头部最适合的圆 (cHH) 和骨最适合的圆 (cG).
  • 测量水平移位角 (HDA) 和垂直移位角 (VDA),以确定部头相对于状腺的位置.

主要成果:

  • 在正常,GHOA和CTA组中观察到平均HDA和VDA的显著差异 (P < .001).
  • HDA:正常61.0°,GHOA是79.9°,CTA是63.4°. 这是正常的.
  • VDA:正常的43.1°,高高的40.9°,高空的59.7°.
  • 卓越的观察者间 (0.991) 和观察者内 (0.998) 可靠性证实了该方法的一致性.

结论:

  • 在部头部和状腺圈之间存在着明显的几何关系.
  • HDA和VDA有效地区分正常的肩膀和那些有GHOA或CTA的肩膀.
  • 这种新的方法表明,它是一个可访问的手术前规划工具,用于肩部病理.