An experimental and theoretical framework for manufacturing prosthetic sockets for transtibial amputees

Mario C. Faustini, Richard R. Neptune, Richard H. Crawford, William E. Rogers, Gordon Bosker

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

Selective laser sintering (SLS) is a powerful manufacturing technology that does not require part-specific tooling or significant human intervention and provides the ability to easily generate parts with complex geometric designs. The present work focuses on developing a manufacturing framework using this technology to produce subject-specific transtibial amputee prosthetic sockets made of Duraform PA, which is a nylon-based material. The framework includes establishing an overall socket design (using the patellar-tendon bearing approach), performing a structural analysis using the finite element method (FEM) to ensure structural reliability during patient use, and validating the results by comparing the model output with experimental data. The validation included quantifying the failure conditions for the socket through a series of bending moment and compression tests. In the case study performed, the FEM results were within 3% of the experimental failure loads for the socket and were considered satisfactory.

Original languageEnglish (US)
Pages (from-to)304-310
Number of pages7
JournalIEEE Transactions on Neural Systems and Rehabilitation Engineering
Volume14
Issue number3
DOIs
StatePublished - Sep 1 2006

Keywords

  • Finite element methods (FEM)
  • Prosthetic sockets
  • Software prototyping
  • Transtibial amputees

ASJC Scopus subject areas

  • Internal Medicine
  • Neuroscience(all)
  • Biomedical Engineering

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