William L Walter, Neri A Baker, Daniel Marsden-Jones, Ameneh Sadeghpour
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Novel Measure of Acetabular Cup Inclination and Anteversion During Total Hip Arthroplasty.
Purpose: The purposes of the present research were to assess the accuracy and usability of the inertial navigation system (INS).
Materials and methods: The accuracy of the device navigation subsystem was assessed using benchtop testing. The usability was assessed through simulated use with surgeons. These results were compared to recent cadaveric results for the same system.
Results: The navigation subsystem had an overall mean absolute error of 1.21° and a maximum absolute error across all devices of 4.79°. The device was found to be usable and to add an estimated 7 minutes to surgery time.
Conclusion: The INS uses a novel approach to provide the surgeon with accurate and fast acetabular cup inclination and anteversion angles during THA.
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