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International Orthopaedics

, Volume 37, Issue 6, pp 1075–1083 | Cite as

Patellar resurfacing versus nonresurfacing in total knee arthroplasty: A meta-analysis of randomised controlled trials

  • Kai Chen
  • Guodong Li
  • Dong Fu
  • Chaoqun Yuan
  • Qiang Zhang
  • Zhengdong Cai
Original Paper

Abstract

Purpose

Patella resurfacing or nonresurfacing in total knee arthroplasty remains controversial. The aim of this study was to evaluate the efficacy of patellar resurfacing through an evaluation of the current literature.

Methods

We carried out a meta-analysis of randomised controlled trials comparing total knee arthroplasties performed with and without patellar resurfacing. Outcomes of reoperation, anterior knee pain and knee scores were analysed.

Results

Fourteen trials assessing 1,725 knees were eligible. The absolute risk of reoperation was reduced by 4 % (95 % confidence interval, 2–6 %) in the patellar resurfacing arm (between-study heterogeneity, P = 0.05, I2 = 42 %), implying that one would have to resurface 25 patellae (95 % confidence interval, 17–50 patellae) in order to prevent one reoperation. There was no difference between the two groups in terms of anterior knee pain, knee pain score, Knee Society score and knee function score. But in the studies followed up for a mean time of not less than five years, a difference was found between the two arms in Knee Society scores (RR = 2.14, 95 % confidence interval, 0.76–3.52; P = 0.002).

Conclusions

The available evidence indicates that patellar resurfacing reduces the risk of reoperation after total knee arthroplasty. Patellar resurfacing patients may make a difference in long-term follow-up (five or more 5 years) of Knee Society scores. In other aspects, the benefit of patellar resurfacing is limited. Additionally, more carefully and scientifically designed randomised controlled trials are required to further prove the claim.

Keywords

Total Knee Arthroplasty Anterior Knee Pain Knee Society Score Knee Score Primary Total Knee Arthroplasty 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Kai Chen
    • 1
    • 2
  • Guodong Li
    • 1
  • Dong Fu
    • 1
    • 2
  • Chaoqun Yuan
    • 1
    • 2
  • Qiang Zhang
    • 1
    • 2
  • Zhengdong Cai
    • 1
  1. 1.Department of Orthopaedic SurgeryShanghai Tenth People’s Hospital / Tenth People’s Hospital of Tongji UniversityShanghaiChina
  2. 2.Nanjing Medical UniversityShanghaiChina

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