2021 ISAKOS Biennial Congress ePoster
Robotic Vs Navigational Vs Conventional Primary Total Knee Arthroplasty. Clinical And Radiological Long-Term Results With A Minimum Follow-Up Of 10 Years
Young Min Lee, MD, Hwasun-gun, Jeollanam-do KOREA, REPUBLIC OF
Bo-Ram Na, MD, Hwasun-Gun, Chonnam KOREA, REPUBLIC OF
Jong-Keun Seon, MD, PhD, Prof, Gwangju, Jeonnam KOREA, REPUBLIC OF
Eun-Kyoo Song, MD, PhD, Prof., Gwangju KOREA, REPUBLIC OF
Center for Joint Disease, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeollanam-do, , KOREA, REPUBLIC OF
FDA Status Cleared
Summary
Comparative study of long term analysis
ePosters will be available shortly before Congress
Abstract
Purpose
Computer-assisted surgery including robotic and navigational TKA has been proposed as a technique to improve implant alignment. However, there is still a debate over the improvement of survival differences or functional differences that a patient might perceive at a minimum 10-year follow up. The aim of this study was to perform an analysis comparing the clinical and radiological outcomes with a minimum follow-up of 10 years, and survivorship and complication rate between of robotic, navigational and conventional total knee arthroplasty.
Methods
A total of 1000 knees (Robotic group: 500 vs. Navigation group: 200 vs. Conventional group : 300) were available for physical and radiologic examination over a mean follow-up of 10 years. The survival rate was analyzed using the Kaplan-Meier method based on the survival endpoint (revision of implant). Hospital for special surgery(HSS) score, Knee Society Score(KSS), Western Ontario and McMaster Universities (WOMAC), and Range of Motion(ROM) were used for clinical evaluation. Radiologic measurements were also assessed including the hip-knee-ankle angle and radiolucent lines according to the KSS system at the final follow-up.
Results
All clinical assessments including HSS, KSS, WOMAC, and ROM at final follow-up showed excellent improvements in three groups (all, p<0.05), without any significant difference between the groups (p>0.05). In radiologic data, The mean hip-knee-ankle angle at the final follow-up was similar between three groups (p = 0.601). Radiolucent lines were observed without a significant difference between three groups. The cumulative 10- years survival rate was 94.8% in the robotic group, 96.2% in the navigation group, and 94.4% in the conventional TKA group (p=0.563), respectively, with no significant difference. Complication rate associated surgery was 5.2 % in the robotic group, 5.3% in the navigation group, and 6.2% in the conventional group,
Conclusion
Our study demonstrated satisfactory survival rate with robotic, navigation and conventional TKA and similar clinical outcomes at long-term follow-up. Regardless of computer assisted orthopaedic surgery (CAOS), conventional TKA may be reliable option for knee osteoarthritis patients. However, larger studies with continuous serial data for functional assessment and greater numbers to evaluate survivorship are needed to confirm these findings.