Clinical Validation of Computer-Assisted Navigation in Total Hip Arthroplasty

  • Beaumont E
  • Beaumont P
  • Odermat D
  • et al.
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Abstract

A CT-based navigation system is helpful to evaluate the reamer shaft and the impactor position/orientation during unilateral total hip arthroplasty (THA). The main objective of this study is to determine the accuracy of the Navitrack system by measuring the implant's true anteversion and inclination, based on pre- and postoperative CT scans ( n = 9 patients). The secondary objective is to evaluate the clinical validity of measurements based on postop anteroposterior (AP) radiographs for determining the cup orientation. Postop CT-scan reconstructions and postop planar radiographs showed no significant differences in orientation compared to peroperative angles, suggesting a clinical validity of the system. Postoperative AP radiographs normally used in clinic are acceptable to determine the cup orientation, and small angular errors may originate from the patient position on the table.

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Beaumont, E., Beaumont, P., Odermat, D., Fontaine, I., Jansen, H., & Prince, F. (2011). Clinical Validation of Computer-Assisted Navigation in Total Hip Arthroplasty. Advances in Orthopedics, 2011, 1–6. https://doi.org/10.4061/2011/171783

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