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Related Concept Videos

Support Reactions01:30

Support Reactions

438
A coplanar force system refers to a set of forces that all lie in the same plane and are subject to different reactions between the point of contact and the supports. Understanding how different types of supports affect coplanar forces is crucial for designing safe and reliable structures that can withstand external loads.
The purpose of the supports is to prevent the translational motion of the system by applying an equal and opposite force and to prevent the system's rotation by applying...
438
Support Reactions in Three Dimensions01:27

Support Reactions in Three Dimensions

968
Support reactions in three dimensions help maintain the stability and equilibrium of various structures and systems. These reactions prevent the system from translating and rotating, ensuring the design can withstand external forces and perform its intended function efficiently and safely. Some of the supports providing support reactions in three dimensions are discussed below:
Ball and Socket Joint is one of the supports allowing free rotation about any axis. This freedom of rotation is...
968
Overview of Exosomes01:36

Overview of Exosomes

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Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
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Related Experiment Video

Updated: Jul 10, 2025

Training Persons with Spinal Cord Injury to Ambulate Using a Powered Exoskeleton
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Exo Supportive Devices: Summary of Technical Aspects.

António Diogo André1,2, Pedro Martins1,3

  • 1Associated Laboratory of Energy, Transports and Aeronautics (LAETA), Biomechanic and Health Unity (UBS), Institute of Science and Innovation in Mechanical and Industrial Engineering (INEGI), 4200-465 Porto, Portugal.

Bioengineering (Basel, Switzerland)
|November 25, 2023
PubMed
Summary

This review critically analyzes exoskeleton design for rehabilitation, covering materials, actuators, and control systems. It highlights key decisions for developing effective exosuits to aid human movement and recovery.

Keywords:
actuationbiomechanical designcontrol systemenergy sourcesexternal devicestructural materials

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Technology
  • Human-Machine Interaction

Background:

  • Humanity has long sought to alleviate suffering from physical impairments.
  • The concept of exoskeletons for medical rehabilitation emerged in the 1950s, inspired by animal exoskeletons.
  • Numerous studies have explored exosuits for aiding human movement.

Purpose of the Study:

  • To provide a critical perspective on exoskeleton conception.
  • To analyze key design decisions in exoskeleton development.
  • To discuss the future of exoskeletons in rehabilitation.

Main Methods:

  • Review of existing literature on exoskeleton design and application.
  • Critical analysis of design choices: materials, actuators, energy sources, and control systems.
  • Presentation and description of various exosuit examples (full-body, upper-body, lower-body).

Main Results:

  • Discussion of advantages and disadvantages of different design choices.
  • Examples of exosuits, their use cases, and outcomes are presented.
  • Identification of critical factors in exoskeleton development for rehabilitation.

Conclusions:

  • Exoskeleton design involves complex choices impacting functionality and effectiveness.
  • The review provides insights into optimizing exosuits for rehabilitation applications.
  • Future directions emphasize the potential of exoskeletons as assisted movement solutions.