Monitoring femoral component insertion during uncemented total hip arthroplasty

Deena Abou-Trabi, Mike Guthrie, Hunter Moore, Phillip Cornwell, Aaron G. Rosenberg, R. Michael Meneghini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


With emerging minimally invasive surgical techniques in total hip arthroplasty, there has been anecdotal evidence of an increase in periprosthetic fractures associated with the insertion of the prosthesis into the femur. This is likely the result of diminished visibility, auditory and tactile feedback for a surgeon operating through much smaller incisions. This study attempts to identify a means to supplement the surgeon's tactile and auditory senses by using damage identification techniques, typically used in civil and mechanical structures, to determine when a cementless femoral implant is fully seated. A tapered femoral component was instrumented with accelerometers and a PZT patch and data was obtained as the femoral component was being impacted into a third generation replicate femur. Five replicate femurs were prepared for a cementless femoral component by an orthopedic surgeon using standard implant-specific instrumentation. Acceleration measurements were taken in the direction of impaction and in the two transverse directions. Signal processing techniques were applied to the acceleration time histories to determine if features exist that can be used to determine when the implant is fully seated. The PZT patch was used as an actuator, as well as a sensor, and impedance measurements were taken to determine if impedance could be used as a feature. This paper discusses the experimental set-up, the signal processing techniques used, and the subsequent results.

Original languageEnglish (US)
Title of host publicationIMAC-XXIV
Subtitle of host publicationConference and Exposition on Structural Dynamics - Looking Forward: Technologies for IMAC
StatePublished - Dec 1 2006
Event24th Conference and Exposition on Structural Dynamics 2006, IMAC-XXIV - St Louis, MI, United States
Duration: Jan 30 2006Feb 2 2006

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652


Other24th Conference and Exposition on Structural Dynamics 2006, IMAC-XXIV
CountryUnited States
CitySt Louis, MI

ASJC Scopus subject areas

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

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