How Does Electromagnetic Navigation Stack Up Against Infrared Navigation in Minimally Invasive Total Knee Arthroplasties?

David R. Lionberger, Jr., Jennifer Weise, David M. Ho, John Haddad

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Forty-six primary total knee arthroplasties were performed using either an electromagnetic (EM) or infrared (IR) navigation system. In this IRB-approved study, patients were evaluated clinically and for accuracy using spiral computed tomographic imaging and 36-in standing radiographs. Although EM navigation was subject to metal interference, it was not as drastic as line-of-sight interference with IR navigation. Mechanical alignment was ideal in 92.9% of EM and 90.0% of IR cases based on spiral computed tomographic imaging and 100% of EM and 95% of IR cases based on x-ray. Individual measurements of component varus/valgus and sagittal measurements showed EM to be equivalent to IR, with both systems producing subdegree accuracy in 95% of the readings.

Original languageEnglish (US)
Pages (from-to)573-580
Number of pages8
JournalJournal of Arthroplasty
Volume23
Issue number4
DOIs
StatePublished - Jun 1 2008

Keywords

  • computer-assisted orthopedic surgery
  • electromagnetic navigation
  • mechanical alignment
  • minimally invasive
  • surgery
  • total knee arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

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