Limitations of Imageless Computer-Assisted Navigation for Total Hip Arthroplasty

Fang Lin*, Dohyung Lim, Richard L. Wixson, Steven Milos, Ronald W. Hendrix, Mohsen Makhsous

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


We prospectively evaluated acetabular cup placement in total hip arthroplasty with an imageless computer navigation system or using conventional manual technique. The achieved cup orientation in the manual group had substantially larger variances and greater placement error than the navigation cases. The use of navigation was abandoned in 3 cases because of excessive pelvic tilt and unreliable registration of the pelvis. Computer navigation system helped improve the accuracy of the acetabular cup placement for total hip arthroplasty in this study. The variation between the intraoperative navigation readings and the computed tomographic values suggests that relying on palpation of bony landmarks through drapes and tissue is a limitation of this method. Further, the variation in pelvic tilt has an effect on cup placement that requires further studies.

Original languageEnglish (US)
Pages (from-to)596-605
Number of pages10
JournalJournal of Arthroplasty
Issue number4
StatePublished - Jun 2011


  • Computer assisted navigation
  • Hip arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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