Abstract
BackgroundThe aim of this study was to compare the clinical and radiologic outcomes of robot-assisted unicompartmental knee arthroplasty (UKA) to those of conventional UKA in Asian patients.MethodsFifty-five patients underwent robot-assisted UKA and 57 patients underwent conventional UKA were assessed in this study. Preoperative and postoperative range of motion (ROM), American Knee Society (AKS) score, Western Ontario McMaster University Osteoarthritis Index scale score (WOMAC), and patellofemoral (PF) score values were compared between the two groups. The mechanical femorotibial angle (mFTA) and Kennedy zone were also measured. Coronal alignments of the femoral and tibial components and posterior slopes of the tibial component were compared. Additionally, polyethylene (PE) liner thicknesses were compared.ResultsThere was no significant difference between the two groups regarding postoperative ROM, AKS, WOMAC and PF score. Robot group showed fewer radiologic outliers in terms of mFTA and coronal alignment of tibial and femoral components (p = 0.022, 0.037, 0.003). The two groups showed significantly different PE liner thicknesses (8.4 ± 0.8 versus 8.8 ± 0.9, p = 0.035). Robot group was the only influencing factor for reducing radiologic outlier (postoperative mFTA) in multivariate model (odds ratio: 2.833, p = 0.037).ConclusionIn this study, robot-assisted UKA had many advantages over conventional UKA, such as its ability to achieve precise implant insertion and reduce radiologic outliers. Although the clinical outcomes of robot-assisted UKA over a short-term follow-up period were not significantly different compared to those of conventional UKA, longer follow-up period is needed to determine whether the improved radiologic accuracy of the components in robotic-assisted UKA will lead to better clinical outcomes and improved long-term survival.
Highlights
Medial unicompartmental knee arthroplasty (UKA) is being used more often for surgical treatment of isolated medial compartmental osteoarthritis of the knee [1,2,3]
There was no significant difference between the two groups regarding postoperative range of motion (ROM), American Knee Society (AKS), WOMAC and PF score
Outcomes of robot-assisted unicompartmental knee arthroplasty determine whether the improved radiologic accuracy of the components in robotic-assisted UKA will lead to better clinical outcomes and improved long-term survival
Summary
Medial unicompartmental knee arthroplasty (UKA) is being used more often for surgical treatment of isolated medial compartmental osteoarthritis of the knee [1,2,3]. Computer-based navigation and robot-assisted UKA have achieved excellent postoperative outcomes and improved prosthesis positioning [15,16,17,18,19]. Since most of the poor outcomes of UKA are associated with inaccurate prosthesis position and malalignment, robotassisted UKA is expected to yield better outcomes, and several studies have reported excellent outcomes of robot-assisted UKA in terms of reducing revision rate and limb alignment outliers [22,23]. The purpose of this study was to compare the clinical and radiologic outcomes of robot-assisted UKA to those of conventional UKA in Asian patients. The aim of this study was to compare the clinical and radiologic outcomes of robot-assisted unicompartmental knee arthroplasty (UKA) to those of conventional UKA in Asian patients
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
