Navigation-assisted spinal instrumentation reduces screw misplacement revisions in trauma patients
Photo by philippe spitalier / Unsplash
Key Takeaway
Consider navigation for spinal instrumentation in trauma to reduce screw misplacement revisions, noting observational limitations.
This observational cohort study from a single Level I trauma center compared navigation-assisted spinal instrumentation to standard fluoroscopic procedures in 557 patients undergoing dorsal spinal instrumentation. The navigated group included 119 patients, while the fluoroscopic group included 438 patients.
After a learning curve, the time per screw improved from 27 (±22) to 19 (±7) minutes in the navigated group (p = 0.03). Radiation time was significantly lower with navigation, though total radiation dose was comparable between groups. Screw misplacement-related revisions were less frequent with navigation (1% vs. 5%), while wound-related revisions were more common.
Safety data, including adverse events, serious adverse events, discontinuations, and tolerability, were not reported. The study was limited by its retrospective, single-center, non-randomized design and lack of reported follow-up duration. Generalizability may be limited to similar trauma center settings.
Practice relevance notes that navigation substantially altered clinical practice, leading to its predominant use in complex anatomies and higher-risk patients, improving screw accuracy and reducing radiation exposure while maintaining procedural efficiency after the learning curve. However, this is an observational study; associations are reported, but causation cannot be inferred.
View Original Abstract ↓
BackgroundNavigation-assisted spinal instrumentation is increasingly used in modern spine surgery, offering improvements in accuracy, workflow efficiency, and radiation safety. However, real-world implementation and the transition from fluoroscopy to navigation in high-volume trauma centers remain insufficiently described.MethodsThis retrospective single-center study reviewed all dorsal spinal instrumentation procedures performed between 2015 and 2025 at a Level I trauma center. A total of 557 patients were analyzed: 119 navigated and 438 fluoroscopic procedures. Demographics, ASA classification, operative time, screw count, radiation parameters, anatomical distribution, and revision rates were compared, with specific focus on changes after the introduction of navigation in 2020.ResultsNavigation use increased steadily and expanded from lumbar to more anatomically demanding regions. Navigated cases involved older patients with higher ASA scores. Although operative times were longer in navigated procedures, this was explained by higher screw counts, and time per screw did not differ significantly. A clear learning curve was observed, with time per screw improving from 27 (±22) to 19 (±7) minutes (p = 0.03). Radiation time was significantly lower in the navigated group, while total dose was comparable. Screw misplacement–related revisions were less frequent with navigation (1% vs. 5%), whereas wound-related revisions were more common, reflecting higher comorbidity and a greater proportion of open procedures.ConclusionNavigation substantially altered clinical practice, leading to its predominant use in complex anatomies and higher-risk patients. It improved screw accuracy and reduced radiation exposure while maintaining procedural efficiency after the learning curve. With ongoing advances such as robotics, augmented reality, and markerless registration, the role of navigation in spinal trauma surgery is expected to expand further.
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