This article and any supplementary material should be cited as follows: Gerschutz MJ, Haynes ML,...

This article and any supplementary material should be cited as follows: Gerschutz MJ, Haynes ML, Nixon D, Colvin JM. Strength evaluation of prosthetic check sockets, copolymer sockets, and definitive laminated sockets. J Rehabil Res Dev. 2012;49(3):405–26. http://dx.doi.org/10.1682/JRRD.2011.05.0091

Slideshow ProjectDOI:10.1682/JRRD.2011.05.0091JSP

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– 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

• 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• 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

• 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.

This article and any supplementary material should be cited as follows: Gerschutz MJ, Haynes ML,...

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