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Related Experiment Video

Updated: May 16, 2026

Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head
06:17

Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head

Published on: April 12, 2022

10-Year Results of Metal-On-Metal Hip Resurfacing With Computer-Assisted Navigation.

Chinyelu Menakaya1, Raheef Alatassi2, Abbigail Allen1

  • 1Division of Orthopedic Surgery, Department of Surgery, London Health Sciences Centre, University Hospital, London, Ontario, Canada.

The Journal of Arthroplasty
|May 14, 2026
PubMed
Summary

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This summary is machine-generated.

Computer-assisted navigation in hip resurfacing arthroplasty offers improved component alignment and reduced loosening without impacting long-term survivorship or patient outcomes. This bone-conserving procedure benefits young men undergoing hip replacement.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Hip resurfacing arthroplasty is a bone-sparing alternative to total hip arthroplasty, particularly for young, active males.
  • Femoral component malalignment is a significant risk factor for early mechanical failure in hip resurfacing.
  • Computer-assisted navigation (CAS) enhances femoral component positioning, but its long-term clinical benefits require further investigation.

Purpose of the Study:

  • To compare the long-term survivorship, radiographic alignment, and patient-reported outcomes of navigation-assisted versus conventional hip resurfacing arthroplasty.
  • To evaluate the impact of CAS on femoral component positioning and its correlation with mechanical failure.
  • To assess the functional outcomes and implant survival rates at 10 years post-surgery.

Main Methods:

Keywords:
birmingham hip resurfacingfunctional outcomesimplant survivalnavigation-assisted surgeryrevision rates

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  • A retrospective cohort study involving 629 hip resurfacing arthroplasties (497 navigated, 132 conventional).
  • Collection of patient-reported outcome measures preoperatively and at 5 and 10 years post-surgery.
  • Radiographic assessment of stem-shaft angle, femoral component anteversion, and loosening; survival analysis using Kaplan-Meier and propensity score matching.

    • Main Results:

    • Ten-year all-cause survivorship was comparable between navigated and conventional hip resurfacing (96.7% vs. 97.0%).
    • Navigation significantly reduced femoral stem-shaft angle outliers (33% vs. 48%) and radiographic femoral loosening (2.3% vs. 12.7%) at 10 years.
    • Both groups showed significant improvements in patient-reported outcomes, with no significant differences observed between groups at 5 or 10 years.

    Conclusions:

    • Navigation-assisted hip resurfacing achieves more consistent femoral component alignment and a lower rate of radiographic loosening compared to conventional methods.
    • Despite improved alignment, navigation-assisted hip resurfacing demonstrated equivalent long-term survivorship and patient-reported functional outcomes.
    • Computer-assisted navigation is a valuable tool for optimizing femoral component placement in hip resurfacing arthroplasty, potentially reducing long-term complications.