A bio-inspired condylar knee joint for leg amputees and for knee implants

A. C. Etoundi*, R. Vaidyanathan, S. C. Burgess

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

This paper presents a novel bio-inspired condylar prosthetic knee joint developed at the University of Bristol. The bio-inspired condylar joint mimics the structure and biomechanics of the human knee joint. The joint contains an inverted parallelogram four-bar mechanism combined with a cam mechanism. The joint has a favourable mechanical advantage compared to a hinge joint. The joint is also compact and robust. An adult-sized prototype joint has been designed and tested. The prototype joint contains a long cable for the ligaments with a mechanism for adjusting preload. Compared to other prosthetic joints, the condylar joint has the advantages that it is simple and closely mimics human biomechanics. The paper presents the design of the new artificial knee joint and presents some of the test results. The joint can be used in artificial legs and also for knee implants.

Original languageEnglish
Title of host publicationDESIGN AND NATURE VI: COMPARING DESIGN IN NATURE WITH SCIENCE AND ENGINEERING
EditorsS Hernandez, CA Brebbia
Place of PublicationSOUTHAMPTON
PublisherWIT Press
Pages23-34
Number of pages12
ISBN (Print)978-1-84564-592-2
DOIs
Publication statusPublished - 2012
Event6th International Conference on Comparing Design in Nature with Science and Engineering - La Coruna, Spain
Duration: 11 Jun 201213 Jun 2012

Publication series

NameWIT Transactions on Ecology and the Environment
PublisherWIT PRESS
Volume160
ISSN (Print)1743-3541

Conference

Conference6th International Conference on Comparing Design in Nature with Science and Engineering
CountrySpain
Period11/06/1213/06/12

Keywords

  • cruciate ligaments
  • four-bar mechanism
  • bio-inspired hinge joint
  • prosthetic joint
  • moving centre of rotation
  • CRUCIATE LIGAMENT RECONSTRUCTION
  • MECHANISM
  • FLEXION
  • REHABILITATION
  • BIOMECHANICS
  • WALKING

Cite this

Etoundi, A. C., Vaidyanathan, R., & Burgess, S. C. (2012). A bio-inspired condylar knee joint for leg amputees and for knee implants. In S. Hernandez, & CA. Brebbia (Eds.), DESIGN AND NATURE VI: COMPARING DESIGN IN NATURE WITH SCIENCE AND ENGINEERING (pp. 23-34). (WIT Transactions on Ecology and the Environment; Vol. 160). WIT Press. https://doi.org/10.2495/DN120031