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Tensile Strength & Impact Resistance of Prosthetic Socket Materials

This study evaluates the tensile and impact properties of materials used in prosthetic check, copolymer, and definitive laminated sockets, providing a foundation for understanding and improving the quality of prosthetic sockets.

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Tensile Strength & Impact Resistance of Prosthetic Socket Materials

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  1. Tensile strength and impact resistance properties of materials used in prosthetic check sockets, copolymer sockets, and definitive laminated sockets Maria J. Gerschutz, PhD; Michael L. Haynes, MS; Derek M. Nixon, BS; James M. Colvin, MS

  2. Study Aim • Evaluate tensile and impact properties of latest materials used to fabricate prosthetic check, copolymer, and definitive laminated sockets. • Relevance • Although most prosthetic socket materials have been used for years, few are backed up by objective evaluations. • Without knowledge of basic properties, trying new methods/materials risks violating long-forgotten lessons and patient safety.

  3. Comparisons Analyzed

  4. Selected Results Thermoplastic tensile strength Thermoplastic impact resistance Copolymer: Impact resistance at 25.5 °C not reported because of incomplete breaks, suggesting influence of temperature. Check socket materials: Only PETG was significantly affected by temperature. Raw specimens and fabricated specimens significantly differed for all prosthetic socket materials. PETG = polyethylene terephthalate glycol.

  5. Conclusions • Material properties determined in this study provide a foundation for understanding and improving quality of prosthetic sockets using current fabrication materials and a basis for evaluating future technologies.

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