统一假肢高空悬挂系统对最低摇摆脚空隙的影响
H Gholizadeh1, E D Lemaire1,2, J Nantel3
1Centre for Rehabilitation Research and Development, Ottawa Hospital Research Institute, Ottawa, Canada.
Canadian prosthetics & orthotics journal
|August 24, 2023
概括
联合悬浮系统改善了跨腿截肢患者的脚清除. 然而,活性真空悬浮剂与不活性真空悬浮剂的差异并不显著,以防止旅行.
科学领域:
- 生物力学 生物力学
- 假肢和整形手术
- 康复工程 康复工程 康复工程
背景情况:
- 截肢的个体面临更高的倒风险,因为动阶段脚清除率降低.
- 有效的假肢悬浮系统可以增强残余肢体的附着,从而有可能改善脚的清除.
- 关于Unity悬挂系统对脚脚的清除影响的研究有限.
研究的目的:
- 调查Unit悬浮系统对跨腿截肢患者的脚清除的影响.
- 为了比较 Unity 悬挂系统与主动 (ON) 和非主动 (OFF) 真空设置的性能.
- 在各种模拟行走条件下评估脚清除.
主要方法:
- 十二名截肢的人被安装了Unity悬挂系统.
- 参与者走在一个虚拟现实环境中,设置了主动和非主动真空设置.
- 收集了最小的脚清除和动力学数据,并与完整的肢体和有能力的对照进行了比较.
主要成果:
- 假肢侧面的最低摆动脚清除度和膝盖屈曲度大于完整侧面和对照.
- 与对照人群相比,假肢侧的部曲减少了.
- 在活跃和非活跃真空设置之间,或者在不同的行走条件中,除了侧坡之外,最小的摇脚清除没有显著差异.
结论:
- 联合悬挂系统可以提高脚的空隙,但主动真空并没有显示出相对于非主动真空的显著优势.
- 截肢者和有能力者都在侧坡上表现出脚的空隙减少,增加了跌倒的风险.
- 需要进一步的研究,以优化对不同地形的假体悬浮.
相关概念视频
Static Equilibrium - II
Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this does not mean that no forces are acting on the object within the system. In fact, there are very few scenarios on Earth in which no forces are acting upon...
Method of Joints: Problem Solving I
The method of joints is a commonly used technique to analyze the forces in structural trusses. The method is based on the principle of equilibrium, which assumes that the truss members are connected by frictionless pins. The forces at each joint can be determined by considering the equilibrium of the forces acting on that joint. Consider a truss structure with two forces of 20 N and 10 N acting at joints C and D, respectively. The method of joints can be used to determine the forces FCB, FDC,...
Method of Joints: Problem Solving II
Consider a truss structure with frictionless joints fixed to a wall and roller support. If a force of 150 N is applied to joint A, the forces in each member of the truss can be determined using the method of joints.
Space Trusses: Problem Solving
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
Indeterminate Structure
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static equilibrium. Indeterminate structures have more unknown forces and reaction forces than equations of static equilibrium that can be used to determine them. Indeterminate structures are often used in engineering to create complex, efficient, and aesthetically pleasing structures. There are various types of indeterminate structures used in engineering and some...
Stability of structures
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...


