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Related Experiment Videos

A reference shape library for computer aided socket design in above-knee prostheses.

R Torres-Moreno1, J Foort, J B Morrison

  • 1School of Kinesiology, Simon Fraser University, Burnaby, British Columbia.

Prosthetics and Orthotics International
|December 1, 1989
PubMed
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A new library of above-knee socket shapes was developed for a Computer Aided Socket Design (CASD) system. This digital library aids in creating custom prosthetic sockets for amputees.

Area of Science:

  • Biomedical Engineering
  • Prosthetics and Orthotics
  • Computer-Aided Design

Background:

  • Traditional prosthetic socket design can be time-consuming and relies heavily on practitioner experience.
  • A standardized digital library of socket shapes can improve the efficiency and consistency of prosthetic socket design.
  • Existing Computer Aided Socket Design (CASD) systems can benefit from a comprehensive reference library.

Purpose of the Study:

  • To create a digital reference library of above-knee socket shapes for a CASD system.
  • To establish a matrix of reference shapes based on anatomical and tissue characteristics.
  • To digitize and analyze these reference shapes for use in prosthetic design.

Main Methods:

  • Developed a library of 27 biomechanical reference shapes using male plaster casts.

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  • Utilized a combination of CNC milling and traditional artisan techniques for shape creation.
  • Digitized each reference shape into cylindrical coordinates for computer analysis.

    • Main Results:

    • Analyzed cross-sectional areas and tissue distributions within and between reference shapes.
    • Modified and numerically stored shape data for CASD system implementation.
    • Established a foundational dataset for above-knee prosthetic socket design.

    Conclusions:

    • The created reference library provides a structured dataset for above-knee CASD.
    • This library facilitates the development of more accurate and efficient prosthetic sockets.
    • The methodology enables the integration of biomechanical data into digital design processes.