Inertial Navigation Technology

The Navbit Sprint system uses an inertial navigation system and a novel method of registration of the patient which does not rely on anatomical landmarks.

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Allowing for Pelvic Tilt in Supine Total Hip Arthroplasty (THA)

Using an adjusted intraoperative target, an estimated 99.7% of patients will be within ±10° of both the inclination and anteversion targets.

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Accuracy During Surgery

The Navbit Sprint is highly accurate in a surgical setting, quickly providing the surgeon with measurements they can trust.

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Accuracy of the Navbit Sprint System

Accuracy of the Navbit Sprint using simulated surgery on cadavers suggests the system has excellent accuracy and precision.

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Relevant Publications
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May 10, 2023

Accuracy of acetabular component alignment with surgical guidance systems during hip arthroplasty

Navigation in total hip arthroplasty has been shown to improve acetabular positioning and can decrease the incidence of mal-positioned acetabular components. This study aimed to assess two surgical guidance systems by comparing intra-operative measurements of acetabular component inclination and anteversion with a post-operative CTscan.

April 4, 2022

Evaluating alternative registration planes for imageless, computer-assisted navigation during supine total hip arthroplasty


During surgery in the supine position, using a functional registration plane was more accurate than using an anatomic reference plane. The increased measurement error using an anatomic reference plane was clinically significant, with nearly one-third of anteversion results outside of a ± 10° target window. Using the table tilt method of registration instead of anatomical landmarking provided further improvements in accuracy.

April 4, 2022

Novel measure of acetabular cup inclination and anteversion during Total Hip Arthroplasty


Through bench testing and usability testing, the Navbit Sprint system was found to be precise and accurate, with a mean absolute error of 1.21°. The system was also found to be usable and to add an estimated 7 minutes to surgery time.

November 2, 2021

Improving Acetabular Component Positioning in Total Hip Arthroplasty: A Cadaveric Study of an Inertial Navigation Tool and a Novel Registration Method.


The Navbit Sprint novel inertial-based navigation tool is accurate for cup positioning in THA in the supine and lateral positions.

October 30, 2021

Revision of Hip and Knee Arthroplasty: Supplementary Report in Hip, Knee & Shoulder Arthroplasty: 2021 Annual


In Australia, 56.9% of hip revision surgeries involve replacement of the acetabular component (alone or part of THR), which results in a significantly lower cumulative risk of second revision compared with only replacing femoral components.

October 20, 2021

The Use of Computer Navigation in Total Hip Arthroplasty is Associated with a Reduced Rate of Revision for Dislocation


Using navigation to improve acetabular component placement was associated with lower risk of dislocation.

July 7, 2021

Reduced Risk of Revision with Computer-Guided Versus Non-Computer-Guided THA


At 10 years, the cumulative risk of all-causes revision was significantly lower in navigated (1.06%) compared with non-navigated (3.88%) total hip arthroplasties.

May 31, 2019

Can some early revision total hip arthroplasties be avoided?


For the 51.3% of revision THAs which were deemed avoidable, the primary reason for revision was suboptimal positioning of the acetabular cup, accounting for 48.3%.

February 28, 2019

Techniques for Optimizing Acetabular Component Positioning in Total Hip Arthroplasty


An estimated 50 to 61% of post-surgery acetabular cup positions fall outside of a safe zone, demonstrating the difficult of positioning this component.

The Future of
Hip Surgery

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