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Validation of a Prototype Augmented Reality Navigation System for Total Hip Replacement
Jevan Arulampalam1,2, Andrew Bucknill3, Sanjeev Gupta4
1School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney Australia.
Surgical Technology International
|October 18, 2022
Summary
This study introduces a novel, small-footprint augmented reality (AR) system for precise total hip replacement (THR) surgery. The AR system accurately guides implant placement, showing comparable results to existing navigation methods.
Area of Science:
- Orthopedic Surgery
- Medical Technology
- Computer-Assisted Surgery
Background:
- Assistive technologies enhance accuracy in total hip replacement (THR).
- Existing systems can be large and complex, occupying valuable operating room space.
Purpose of the Study:
- To develop and validate a compact augmented reality (AR) system for accurate acetabular component placement in THR.
- To assess the system's accuracy in achieving preoperatively planned implant positions.
Main Methods:
- A small-footprint AR prototype was developed, overlaying 3D pelvic models and target cup positions.
- Cadaveric surgeries were performed using the AR system for acetabular cup placement.
- Postoperative CT scans measured the accuracy of achieved implant positions against preoperative targets.
Main Results:
- Mean absolute deviations from target placement were 2.9° for inclination, 3.0° for anteversion, and 1.6mm for depth.
- Sixty-six percent of implant placements were within +/-5° of the target orientation.
- The system demonstrated high accuracy in guiding acetabular component positioning.
Conclusions:
- A small-footprint AR system can facilitate accurate acetabular cup placement in THR.
- The developed AR system provides intraoperative guidance comparable to established navigation techniques.
- This technology offers a space-saving solution for improving surgical accuracy in hip replacement.
