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相关概念视频

Functional Classification of Joints01:09

Functional Classification of Joints

3.8K
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...
3.8K
Knee Joint01:23

Knee Joint

1.5K
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...
1.5K
Structural Classification of Joints01:20

Structural Classification of Joints

3.1K
Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
3.1K

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相关实验视频

Updated: May 31, 2025

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

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使用功能性联合坐标系统在体外膝关节测试中的好处

Tara F Nagle1, Jeremy G Loss1, Robb W Colbrunn1

  • 1Department of Biomedical Engineering and Lerner Research Institute, Cleveland Clinic, 2111 E. 96th Street, Cleveland, OH 44106.

Journal of biomechanical engineering
|January 22, 2025
PubMed
概括

在膝关节生物力学测试中使用功能坐标系统 (CS) 显著减少动力变化,改善力控制. 这项研究表明,功能性CS比解剖学CS具有更准确的 in vitro膝关节关节分析的好处.

科学领域:

  • 生物力学 生物力学
  • 整形外科 整形外科 整形外科
  • 肌肉骨研究 研究

背景情况:

  • 精确测量膝关节动力学需要确定骨和股骨的坐标系统 (CS).
  • 在以前的研究中,功能性CS与解剖性CS相比,已显示出更高的可重现性.

研究的目的:

  • 量化在体外膝关节测试中使用功能性CS相对于解剖学CS的优势.
  • 评估CS定义对动力反应变化,交叉通话和力控制的影响.

主要方法:

  • 七个尸体膝关节在一个专门的关节模拟器中承受了六度自由度 (DOF) 的负荷.
  • 对于每个膝关节,建立了解剖学和功能性CS.
  • 应用了负载配置文件,并记录了动力学和动力学,以比较两个CS定义.

主要成果:

  • 功能性CS显著降低了各种负载条件下的膝关节内动力反应变化.
  • 动力交叉交谈在松性测试 (前后,瓦鲁斯-瓦尔古斯,内外旋转) 期间与功能性CS显著减少.
  • 所有使用功能性CS的DOF在步态和组合负荷时,膝关节间动力反应变化明显较低.
  • 对于前后和 varus-valgus 负载的力/扭矩控制性能得到了显著的改进,具有功能性的 CS.

更多相关视频

Using a Knee Arthrometer to Evaluate Tissue-specific Contributions to Knee Flexion Contracture in the Rat
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Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
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相关实验视频

Last Updated: May 31, 2025

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
07:43

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

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Using a Knee Arthrometer to Evaluate Tissue-specific Contributions to Knee Flexion Contracture in the Rat
04:59

Using a Knee Arthrometer to Evaluate Tissue-specific Contributions to Knee Flexion Contracture in the Rat

Published on: November 9, 2018

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Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
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Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Published on: November 23, 2019

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结论:

  • 功能性CS在体外膝关节检测中比解剖学CS提供了显著的优势.
  • 功能性CS的使用导致更准确和可重现的动力学测量和改进的力控制.
  • 建议在所有体外膝关节研究中使用功能性CS,以提高数据可靠性.