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.
Using an adjusted intraoperative target, an estimated 99.7% of patients will be within ±10° of both the inclination and anteversion targets.
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.
IHS
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.
MDER
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.
HSS
The Navbit Sprint novel inertial-based navigation tool is accurate for cup positioning in THA in the supine and lateral positions.
AOANJRR
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.
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