Abstract
BackgroundThis study was performed to compare the clinical outcomes of unicompartmental knee arthroplasty (UKA) revised to total knee arthroplasty (TKA) versus primary TKA.MethodsRelevant trials were identified via a search of the Cochrane Central Register of Controlled Trials and PubMed from inception to 17 June 2017. A meta-analysis was performed to compare postoperative outcomes between revised UKA and primary TKA with respect to the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score, Knee Society Score (KSS), mean polyethylene thickness, hospital stay, revision rate, range of motion (ROM), and complications.ResultsFive of 233 studies involving 536 adult patients (revised UKA group, n = 209; primary TKA group, n = 327) were eligible for inclusion in the meta-analysis. The primary TKA group had better WOMAC scores, KSS, and ROM than the revised UKA group (P < 0.05). Compared with primary TKA, revision of UKA to TKA required more augments, stems, and bone grafts and a thicker polyethylene component (P < 0.05). There were no significant differences between the two groups in the revision rate, hospital stay, or complications (P > 0.05).ConclusionConversion of UKA to TKA is associated with poorer clinical outcomes than primary TKA. Furthermore, we believe that conversion of UKA to TKA is more complicated than performing primary TKA. Revision UKA often requires more augments, stems, and bone grafts and thicker polyethylene components than primary TKA. However, patients who undergo conversion of UKA to TKA have similar hospital stay, complications, and revision rate as patients who undergo primary TKA.
Highlights
This study was performed to compare the clinical outcomes of unicompartmental knee arthroplasty (UKA) revised to total knee arthroplasty (TKA) versus primary TKA
We identified 233 potential citations (215 from PubMed, 18 from the Cochrane Library) comparing the clinical outcomes of revised UKA and primary TKA
The mean difference (MD) for age and body mass index (BMI) were 0.43 (P = 0.61; 95% confidence interval (CI), − 1.24–2.10) and − 0.67 (P = 0.13; 95% CI, − 1.56–0.21), respectively; there were no significant differences between groups in age or BMI
Summary
This study was performed to compare the clinical outcomes of unicompartmental knee arthroplasty (UKA) revised to total knee arthroplasty (TKA) versus primary TKA. The best treatment options for patients with unicompartmental osteoarthritis of the knee are still controversial [1]. Total knee arthroplasty (TKA) and unicompartmental knee arthroplasty (UKA) are both used to treat osteoarthritis of the knee. Because of the continuous development of surgical techniques and component design since the early 1970s [2, 3], UKA has become a more successful and reliable treatment method for unicompartmental knee. Sun and Su Journal of Orthopaedic Surgery and Research (2018) 13:158 Study Selection Cases definition. Comparable Comparable for a, b, c* for d, e, f* Exposure
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
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.
