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Related Experiment Videos

A CAD CAM method for custom below-knee sockets.

J R Engsberg1, G S Clynch, A G Lee

  • 1Human Performance Laboratory, University of Calgary, Canada.

Prosthetics and Orthotics International
|December 1, 1992
PubMed
Summary
This summary is machine-generated.

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This study introduces a new numerical method for creating custom prosthetic sockets for below-knee amputees. The computer-aided design and milling system resulted in better-fitting prosthetic sockets for all patients.

Area of Science:

  • Biomedical Engineering
  • Prosthetics and Orthotics

Background:

  • Traditional prosthetic socket fabrication can be time-consuming and may not always yield optimal fit.
  • Existing numerical methods have limitations in accuracy, site identification, software flexibility, and milling resolution.

Purpose of the Study:

  • To develop and evaluate a novel numerical method for fabricating prosthetic sockets.
  • To improve the fit and comfort of prosthetic sockets for below-knee amputees through computer-aided design and manufacturing.

Main Methods:

  • Utilized an optical/laser digitizer to capture 3D stump data and modification sites.
  • Employed custom computer-aided design (CAD) software for data manipulation by prosthetists.
  • Generated milling machine programs for high-resolution mold fabrication.

Related Experiment Videos

  • Fabricated prosthetic sockets based on the computer-generated molds.

    • Main Results:

    • Successfully fitted 15 below-knee amputees using the developed system.
    • All patients reported subjective improvement in socket fit compared to conventionally made sockets.
    • The system enabled first-iteration socket fitting with increased experience.

    Conclusions:

    • The developed numerical method offers significant advantages over existing systems, including enhanced accuracy, user-friendly software, and high-resolution milling.
    • This innovative approach improves prosthetic socket fabrication for below-knee amputees and has potential applications across prosthetics and orthotics.
    • The system addresses key limitations in current numerical prosthetic design, leading to better patient outcomes.