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Related Experiment Videos

Validation of a quantitative method for defining CAD/CAM socket modifications.

E D Lemaire1, P Bexiga, F Johnson

  • 1The Rehabilitation Centre, Ottawa, Ontario, Canada.

Prosthetics and Orthotics International
|June 4, 1999
PubMed
Summary
This summary is machine-generated.

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A new quantitative method enables the creation of Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) prosthetic socket templates from manual modifications. This approach demonstrated comparable comfort and function to traditionally made sockets in trans-tibial amputees.

Area of Science:

  • Prosthetics and Orthotics
  • Biomedical Engineering
  • Rehabilitation Technology

Background:

  • Manual socket modification is a skilled process, often varying between prosthetists.
  • Standardizing modifications for Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) systems is challenging.
  • Developing a quantitative method to translate manual modifications into CAD/CAM templates is needed.

Purpose of the Study:

  • To develop and validate a quantitative method for creating CAD/CAM socket templates based on averaged manual modifications.
  • To compare the clinical outcomes of sockets fabricated using the new CAD/CAM template method versus traditional manual methods.
  • To assess patient and prosthetist satisfaction, prosthetic comfort, and functional performance.

Main Methods:

Related Experiment Videos

  • A CAD software (CADVIEW) was modified to analyze and average manual socket modifications from multiple trans-tibial amputees.
  • A standardized CAD template was generated from these averaged modifications.
  • 13 trans-tibial amputees were fitted with both manually and CAD/CAM-generated sockets, with subsequent subjective and objective assessments.

    • Main Results:

    • No significant differences in overall comfort, function, or satisfaction were found between manual and CAD/CAM sockets.
    • A statistically significant difference was observed in vertical peak forces on the amputated side between the two socket types.
    • The developed quantitative technique provides a reliable method for transitioning manual modification styles to CAD/CAM systems.

    Conclusions:

    • The quantitative method for generating CAD/CAM socket templates is clinically applicable.
    • This technique facilitates the integration of prosthetists' modification expertise into digital workflows.
    • Further research may explore optimizing CAD/CAM socket design based on specific force distribution patterns.