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相关概念视频

Knee Joint01:23

Knee Joint

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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...
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Muscles that Move the Leg01:23

Muscles that Move the Leg

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The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed...
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Virtual Work for a System of Connected Rigid Bodies01:06

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Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
Next,...
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Bones of the Lower Limb: Femur and Patella01:16

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The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the...
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相关实验视频

Updated: May 25, 2025

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
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肌肉驱动的全膝关节置换稳定性与虚拟带

Alexandre Galley1, Emma Donnelly2, Ilya Borukhov3

  • 1Biomechanical Engineering Research Laboratory, Department of Mechanical and Materials Engineering, Western University, 1151 Richmond St., London, ON N6A 3K7, Canada.

Bioengineering (Basel, Switzerland)
|February 26, 2025
PubMed
概括

总膝关节置换 (TKR) 松性测试需要将肌肉力量纳入准确的稳定性评估. 使用肌肉执行系统 (MAS) 的新方法比传统模拟器更好地模拟活体膝盖生物力学.

关键词:
关节动力学 关节动力学关节松性 关节松性 关节松性联合运动模拟器的联合运动模拟器.整体膝关节置换 整体膝关节置换

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科学领域:

  • 生物力学 生物力学
  • 整形外科手术 整形外科手术
  • 生物医学工程 生物医学工程

背景情况:

  • 膝关节的稳定性取决于被动 (带),活跃 (肌肉) 和静态 (一致性) 的因素.
  • 全膝关节置换 (TKR) 植入物的临床前测试使用关节运动模拟器.
  • 目前的TKR测试缺乏被动和活性稳定剂的准确生物机械复制,忽略了关节稳定性的关键组件.

研究的目的:

  • 评估一种新的肌肉执行系统 (MAS) 用于TKR松性测试.
  • 为了比较TKR稳定性测试与和没有活性带模拟.
  • 评估不同虚拟带模型对TKR松度测量的影响.

主要方法:

  • 一个肌肉执行系统 (MAS) 集成四头肌驱动的运动与机器人膝盖测试能力.
  • 评估TKR稳定性是使用一个非尸体关节模拟器,使用两个虚拟带模型和没有活跃带.
  • 宽松度极限是使用常规的力/位移控制 (VIVO) 和 MAS 重力依赖的肌肉控制来确定的.

主要成果:

  • 关节控制方法的差异凸显了肌肉力量对于活跃关节稳定的必要性.
  • 虚拟带模型的变化强调了生理附带带表示的重要性.
  • 与传统方法相比,MAS测试显示了明显的松性概况.

结论:

  • 准确的TKR临床前测试需要模拟活性肌肉力量,以全面评估关节稳定性.
  • 附带带的生理建模对于在TKR中可靠的松性测试至关重要.
  • 开发的MAS为TKR稳定性评估提供了更具生物力学相关性的方法.