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Osseointegrated Lower Limb Prosthetic Force Limiting Connection

[+] Author Affiliations
Benjamin W. Gasser, Loren E. Bridges, Soudabeh Kargar, Dawn M. Bardot

University of Alabama in Huntsville, Huntsville, AL

Paper No. BioMed2011-66012, pp. 23-24; 2 pages
doi:10.1115/BioMed2011-66012
From:
  • ASME 2011 6th Frontiers in Biomedical Devices Conference
  • ASME 2011 6th Frontiers in Biomedical Devices Conference and Exhibition
  • Irvine, California, USA, September 26–27, 2011
  • Conference Sponsors: Bioengineering Division
  • Copyright © 2011 by ASME

abstract

A goal in the design of prosthetic limbs is to mimic the use, feel, and behavior of the missing natural limb. A promising area of research focused on these goals is osseointegration. Osseointegration is the direct attachment of the prosthetic device to the bone. In the case of the above knee amputee, it would involve placing a fixture in the femur with a pin (abutment) that extends through the skin and allows the prosthetic leg to be directly attached to the bone structure, and creates a more natural force path which offers a variety of benefits when compared with the stump and socket approach. First, it eliminates the pressure placed on soft tissues. The skin and muscles of the leg were never designed to be part of the load transfer path. With an osseointegrated fixture, the load is transferred directly into the bone and into the rest of the body using the same force path a natural leg would generate.

Copyright © 2011 by ASME

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