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Bones of the Upper Limb: Radius

The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
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A multigrasp hand prosthesis for transradial amputees.

Skyler A Dalley1, Tuomas E Wiste, Huseyin Atakan Varol

  • 1Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37235, USA. skyler.a.dalley@vanderbilt.edu

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|November 25, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a novel multi-degree-of-freedom prosthetic hand for transradial amputees, offering eight distinct grasp postures. Experimental data confirms its functional capabilities, advancing prosthetic technology.

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Area of Science:

  • Biomedical Engineering
  • Robotics
  • Rehabilitation Technology

Background:

  • Current prosthetic hands offer limited dexterity and fewer grasp options.
  • Transradial amputees require advanced prosthetic solutions for improved function.

Purpose of the Study:

  • To design and characterize a multi-degree-of-freedom, anthropomorphic prosthetic hand.
  • To evaluate the hand's capability to provide eight canonical grasp postures.
  • To assess performance metrics including frequency response, grasping force, mass, and noise.

Main Methods:

  • Design of a novel anthropomorphic prosthetic hand with multiple degrees of freedom.
  • Experimental characterization of grasp posture provision.
  • Analysis of finger motion frequency response.
  • Measurement of grasping force as a function of finger position.

Main Results:

  • The prosthetic hand successfully provides eight canonical grasp postures.
  • Frequency response of finger motion was characterized.
  • Grasping force capabilities were quantified.
  • Performance specifications including mass and audible noise were documented.

Conclusions:

  • The designed prosthetic hand offers enhanced dexterity and functionality compared to existing devices.
  • Experimental data validates the hand's performance for transradial amputees.
  • This development represents a significant advancement in prosthetic hand technology.