2023 ISAKOS Biennial Congress ePoster
Accuracy of Advanced Active Robotic Technology for Total Knee Arthroplasty: A Cadaveric Study
Yong-Beom Park, MD, PhD, Gwangmyeong-Si, Gyeonggi-Do KOREA, REPUBLIC OF
Seong-Hwan Kim, MD,Ph.D, MStat, Seoul KOREA, REPUBLIC OF
Young-Bong Ko, MD, Seoul KOREA, REPUBLIC OF
Chung-Ang University, Seoul, KOREA, REPUBLIC OF
FDA Status Not Applicable
Summary
This cadaveric study demonstrate that a high degree of accuracy in terms of resection thickness and alignment can be obtained by surgeons using this newly advanced active robotic system for TKA.
ePosters will be available shortly before Congress
Abstract
Purpose
Although the accuracy of other types of robotic systems for total knee arthroplasty (TKA) has been assessed in cadaveric studies, no investigations have been performed to evaluate this newly advanced active robotic system. Therefore, the authors aimed to analyze the accuracy of bone resection in terms of thickness and alignment in a cadaveric study.
Methods
Three cadaveric specimens (six knees) and an active robotic system (CUVIS Joint, CUREXO) were used in the study. Three surgeons with different experiences with robotic TKAs performed this cadaveric study using the same robotic protocol with two different implant designs. The thickness and angle of bone resection planes obtained from the optical tracking system and the difference between resection planes and the planning data were assessed to determine accuracy.
Results
With respect to the overall resection accuracy compared to the plan, the cutting depth accuracy was within 1.0 mm mean of root mean square (RMS), and the resection angle accuracy in terms of sagittal, coronal, and axial planes was within 1.0° mean RMS. In contrast, no significant differences were observed between the planned and measured values in terms of the resection angles and cutting thickness. The hip–knee–ankle angle at postoperative evaluation was 0.7° ± 0.7° (RMS 1.0°).
Conclusion
This in vivo study suggests that the use of this newly advanced active robotic system for TKA demonstrates a high degree of accuracy in terms of resection thickness and alignment. This finding supports the clinical application of this advanced robotic system.