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相关概念视频

Ankle Joint01:10

Ankle Joint

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The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
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Development of the Limb Synovial Joints01:07

Development of the Limb Synovial Joints

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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...
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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...
3.1K
Introduction to Joints00:58

Introduction to Joints

4.7K
The adult human body usually has 206 bones, and except for the hyoid bone in the neck, each bone is connected to at least one other bone. Joints are the location where bones come together. Many joints allow for movement between the bones. At these joints, the articulating surfaces of the adjacent bones can move smoothly against each other. However, the bones of other joints may be joined by connective tissue or cartilage. These joints are designed for stability and provide little or no...
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Muscles of the Leg that Move the Foot and Toes01:28

Muscles of the Leg that Move the Foot and Toes

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The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions.
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles....
3.9K
Bones of the Lower Limb: Tibia and Fibula01:10

Bones of the Lower Limb: Tibia and Fibula

8.9K
The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...
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相关实验视频

Updated: Jan 16, 2026

Using Gold-standard Gait Analysis Methods to Assess Experience Effects on Lower-limb Mechanics During Moderate High-heeled Jogging and Running
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优化脚关节的刚性,以改善类似人类的行走.

Kwonseung Cho1, Kang-Woo Lee1, Pilwon Hur2

  • 1Department of Mechanical and Robotics Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea.

Scientific reports
|September 26, 2025
PubMed
概括
此摘要是机器生成的。

优化脚关节的刚性可以改善行走. 一个模拟和人体实验发现,0.98 Nm/deg的刚度增强了翻转和推开,提高了用户的满意度和步行表现.

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Last Updated: Jan 16, 2026

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Oscillation and Reaction Board Techniques for Estimating Inertial Properties of a Below-knee Prosthesis
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科学领域:

  • 生物力学 生物力学
  • 机器人技术 机器人技术 机器人技术
  • 人类的机动运动

背景情况:

  • 人类的甲足关节 (脚关节) 对于有效的步态至关重要,支身体重量,并使脚跟到脚的翻转和推开能够平稳地进行.
  • 最佳的脚关节刚度对于生物和机器人运动至关重要,但仍难以确定.
  • 了解关节机制是改善辅助设备和假肢设计的关键.

研究的目的:

  • 通过模拟和实验方法研究人类脚关节的最佳刚度,以提高行走性能.
  • 为平衡翻转和推开机制的被动设备确定一个单一的,实用的刚度值.
  • 为了评估可调节的脚关节硬度对主观满意度和人类时空步态参数的影响.

主要方法:

  • 使用基于模拟的轨迹优化方法与双脚模型来分析不同脚关节刚性的影响.
  • 从模拟中提取了一个代表性的刚度值 (0.98 Nm/deg),通过在推开阶段的时间变化的刚度平均.
  • 在不同的硬度条件下,使用可调节的脚关节靴进行了人类行走实验.

主要成果:

  • 模拟结果表明,脚下脚关节的硬度有助于翻转,而更高的硬度有助于推开.
  • 经过实验测试的0.98Nm/deg的刚度导致了最高的主观满意度和改善的时空行走结果.
  • 定性趋势,包括脚关节时刻的进展和脚跟脱落的时间,显示了模拟和实验结果之间的一致性.

结论:

  • 脚关节的硬度显著影响着行走机制,需要在翻转和推倒之间保持平衡.
  • 在人体实验中,从模拟中获得的0.98Nm/deg的代表性刚度值显示了提高步行性能和用户体验的潜力.
  • 调整脚关节硬性是改善生物和机器人系统中步行效率和舒适性的有希望的策略.