Clinical Report: Evaluation of the Precision of Traditional versus Portable CT Navigation Systems in Total Hip Arthroplasty

Overview

Expand on the limitations of the portable system, particularly in anteversion alignment.

Background

Total hip arthroplasty (THA) is a widely performed procedure for end-stage hip disease, with precise implant placement critical to prevent complications such as dislocation and wear. The development of computer-assisted navigation systems aims to enhance accuracy in implant positioning. However, the accessibility and cost of conventional systems pose challenges, necessitating the exploration of portable alternatives.

Data Highlights

Key Findings

• The portable CT navigation system demonstrated comparable accuracy to the conventional system in alignment angles.
• Mean alignment errors for the portable system were 2.8° for radiographic inclination and 3.8° for radiographic anteversion.
• Short-term clinical outcomes did not significantly differ between the two systems.
• Portable systems showed a lower upfront cost structure compared to conventional systems.
• Increased navigation error was noted in anteversion with the portable system, with more outliers exceeding 5°.

Clinical Implications

Suggest strategies for clinicians to address the limitations of portable systems.

Conclusion

In conclusion, portable CT navigation systems offer a promising alternative to conventional systems in THA, though further studies are needed to address precision concerns and optimize clinical outcomes.

Related Resources & Content

1. Assessment of Acetabular Cup Positioning Precision in Computer-Assisted Total Hip Arthroplasty, Springer, 2025 -- https://link.springer.com/article/10.1007/s00402-025-05797-w
2. Evaluation of Anatomical Axes Versus Navigated Functional Rotation Axis Based on Ligament Tension for Aligning Rotational Femoral Components in Cadaveric Knee Arthroplasty, Springer, 2024 -- https://link.springer.com/article/10.1007/s00402-024-05394-3
3. An Innovative Approach to Assessing Combined Component Anteversion in Total Hip Arthroplasty Using Cross-Table Lateral Hip Radiographs, Springer, 2023 -- https://link.springer.com/article/10.1007/s00402-023-04825-x
4. Robot-assisted surgery for orthopaedic procedures: early value assessment, NICE, 2025 -- https://www.nice.org.uk/guidance/HTG743/chapter/1-recommendations?utm_source=openai
5. Comparison between the accuracy of conventional and portable computed tomography-based navigation systems in total hip arthroplasty, Archives of Orthopaedic and Trauma Surgery, 2026 -- https://link.springer.com/article/10.1007/s00402-026-06321-4
6. Knee Surgery, Sports Traumatology, Arthroscopy — Customized Positioning Templates for Total Knee Arthroplasty: No Notable Differences Observed in Final Component Alignment Compared to Pre-Operative Digital Planning, Except for Tibial Rotation
7. NICE Guidance on Robot-assisted Surgery for Orthopaedic Procedures
8. Comparison between the accuracy of conventional and portable computed tomography-based navigation systems in total hip arthroplasty | Archives of Orthopaedic and Trauma Surgery | Springer Nature Link
9. Accuracy of Acetabular Cup Position Using CT Navigation During Total Hip Arthroplasty in Patients With Developmental Dysplasia of the Hip - PMC