strength evaluation of prosthetic check sockets copolymer sockets and definitive laminated sockets n.
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Strength evaluation of prosthetic check sockets, copolymer sockets, and definitive laminated sockets . Maria J. Gerschutz, PhD; Michael L. Haynes, MS; Derek Nixon, BS; James M. Colvin, MS . Aim

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strength evaluation of prosthetic check sockets copolymer sockets and definitive laminated sockets

Strength evaluation of prosthetic check sockets, copolymer sockets, and definitive laminated sockets

Maria J. Gerschutz, PhD; Michael L. Haynes, MS; Derek Nixon, BS; James M. Colvin, MS

slide2

Aim

    • Assess static failure loads for check sockets (CSs), copolymer sockets (CPs), and definitive laminated sockets (DLs).
    • Compare facilities, fabrication material and methods, and socket thickness.
  • Relevance
    • While International Organization for Standardization (ISO) standards exist for most lower-limb prosthetic components, they do not include prosthetic sockets.
methods
Methods
  • We used modified ISO 10328 to measure static failure loads of prosthetic sockets.
    • Compared them with criteria set by this standard for other components.

Static socket testing configuration.

results
Results
  • CS Static Strength
    • Influenced by thickness, material choice, fabrication method.
  • CP Static Strength
    • Depended on thickness, fabrication method.
  • DL Static Strength
    • Influenced by material choice, fabrication method.
  • Ductile loading criterion:
    • Most CSs and all CPs failed in a ductile mode.
  • Brittle loading criterion:
    • Most DLs failed in a brittle mode.
conclusions
Conclusions
  • Our results provide:
    • Foundation for understanding quality of prosthetic sockets.
    • Insight into possible routes for improving current care delivered to patients.
    • Comparative basis for future technology.