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

Journal of Orthopaedic Surgery and Research

Haoyang Wang¹  Zongke Zhou¹  Zeyu Luo¹  Zhenyu Luo¹  Fuxing Pei¹  Qiang Xiao¹ 

[1] 0000 0004 1770 1022, grid.412901.f, Department of Orthopedics, West China Hospital/West China School of Medicine, Sichuan University, 37# Wuhou Guoxue road, 610041, Chengdu, People’s Republic of China;

关键词: Total knee arthroplasty;    Single-radius;    Multi-radius;    Long-term results;    Anterior knee pain;   

DOI  :  10.1186/s13018-019-1183-0

来源: publisher

【 摘 要 】

BackgroundSingle-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).MethodsIn 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.ResultsHospital 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).ConclusionBoth 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.

【 授权许可】

CC BY