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Journal of Orthopaedic Surgery and Research

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Open Access 01-12-2019 | Research article

Long-term results of total knee arthroplasty with single-radius versus multi-radius posterior-stabilized prostheses

Authors: Zhenyu Luo, Zeyu Luo, Haoyang Wang, Qiang Xiao, Fuxing Pei, Zongke Zhou

Published in: Journal of Orthopaedic Surgery and Research | Issue 1/2019

Abstract

Background

Single-radius (SR) prostheses and multi-radius (MR) prostheses have different theoretical advantages; however, there has been a paucity of evaluations comparing the two. This study was designed to compare the 10-year clinical, radiological, and survival outcomes of SR and MR posterior-stabilized prostheses in total knee arthroplasty (TKA).

Methods

In this retrospective cohort study, 220 consecutive patients undergoing TKA between October 2006 and October 2007 were divided into the SR group (106 patients, Stryker Scorpio NRG) and the MR group (114 patients, DePuy Sigma PFC), with a minimum follow-up of 10 years. Clinical, functional, and radiological outcomes, as well as satisfaction rates and survival results, were evaluated.

Results

Hospital for Special Surgery and Short Form-12 health survey scores were all significantly improved in both groups at the final follow-up (P < 0.05), but the groups did not differ. The SR group had significantly less anterior knee pain (AKP) and painless crepitation (P < 0.05). Radiological results in terms of radiolucent lines and component position angle showed no differences between groups. The Kaplan-Meier survival curve estimates at 10 years were not significantly different between the groups (P = 0.4172).

Conclusion

Both SR and MR posterior-stabilized prostheses can lead to satisfactory outcomes. The SR prosthesis design gave less anterior knee pain than did the MR prostheses. Two prostheses showed no differences in terms of clinical scales, radiological results, satisfaction rates, and survival results at a long-term follow-up. More accurate measurements are required.

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Title: Long-term results of total knee arthroplasty with single-radius versus multi-radius posterior-stabilized prostheses
Authors: Zhenyu Luo
Zeyu Luo
Haoyang Wang
Qiang Xiao
Fuxing Pei
Zongke Zhou
Publication date: 01-12-2019
Publisher: BioMed Central
Published in: Journal of Orthopaedic Surgery and Research / Issue 1/2019
Electronic ISSN: 1749-799X
DOI: https://doi.org/10.1186/s13018-019-1183-0

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Long-term results of total knee arthroplasty with single-radius versus multi-radius posterior-stabilized prostheses

Abstract

Background

Methods

Results

Conclusion

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Background

Methods

Results

Conclusion

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