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Updated: Jul 10, 2026

Augmented Reality Navigation-Guided Core Decompression for Osteonecrosis of Femoral Head
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Computer-assisted hip resurfacing surgery using the acrobot navigation system.

A R W Barrett1, B L Davies, M P S F Gomes

  • 1The Acrobot Company Limited, Unit 13.3.2 The Leathermarket, Weston Street, London, UK. adrian.barrett@acrobot.co.uk

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
|November 21, 2007
PubMed
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The Acrobot Navigation System enhances computer-assisted hip resurfacing surgery accuracy. Clinical evaluation shows potential for precise prosthesis placement with no added surgical time compared to traditional methods.

Area of Science:

  • Orthopedic Surgery
  • Medical Device Technology
  • Surgical Navigation Systems

Background:

  • Previous laboratory development of the Acrobot Navigation System for hip resurfacing surgery has been reported.
  • This paper details the system's transition from laboratory to clinical application.
  • Improvements have been implemented to streamline the surgical procedure.

Purpose of the Study:

  • To evaluate the Acrobot Navigation System in a clinical setting for hip resurfacing surgery.
  • To assess the system's ability to achieve accurate pre-operative planning and precise prosthesis placement.
  • To determine if the navigated technique incurs an intraoperative time penalty compared to standard non-navigated surgery.

Main Methods:

  • The system facilitates accurate surgical planning and precise prosthesis implantation.

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  • The navigation system is currently undergoing final clinical evaluation.
  • Accuracy will be assessed by comparing pre-operative computed tomography (CT) plans with post-operative CT scans.
  • Qualitative clinical results are presented based on visual comparisons with post-operative X-rays.

    • Main Results:

    • The system aims for precise placement aligned with the surgical plan.
    • The goal is to achieve a zero intraoperative time penalty versus standard techniques.
    • Final clinical evaluation is in progress; full results are pending.
    • Qualitative data suggests successful visual correlation between plans and outcomes.

    Conclusions:

    • The Acrobot Navigation System shows promise for improving accuracy in hip resurfacing surgery.
    • The system is designed to integrate seamlessly into surgical workflows without increasing operative time.
    • Further clinical studies are planned to quantitatively validate the system's accuracy and patient outcomes.