A meta-analysis of resurfacing versus nonresurfacing the patella in total knee arthroplasty / 中国矫形外科杂志

ABSTRACT

[Objective]To assess the difference of resurfacing versus nonresurfacing the patella in total knee arthroplasty. [Methods]Studies on comparison between resurfacing and nonresurfacing the patella in total knee arthroplasty were identified.All the randomized controlled trials were included for Meta analysis with Rev Man 4.2 software.[Results]Sixteen eligible randomized controlled trials showed 1922 TKA.The result of meta-analysis indicated that the risk of postoperative anterior knee pain was lower in patellar resurfacing group than in patellar nonresurfacing group within 5 years.But the difference did not exist after 5 years.The combined RR was 0.53,95%CI(0.30,0.94).The risk of reoperation had no significant difference in patellar resurfacing group and patellar nonresurfacing group within 5 years.But 5 years later,the risk of reoperation was lower in patellar resurfacing group than in patellar nonresurfacing group.The combined RR was 0.35,95%CI(0.18,0.66).There was no difference in the mean postoperative knee scores(WMD=0.44,95%CI(-1.22,2.09)).[Conclusion]Patellar resurfacing can reduce the risk of postoperative anterior knee pain within 5 years and the risk of reoperation 5 years later after total knee arthroplasty.There is no difference in the mean postoperative knee scores.More carefully designed randomized controlled trials are required to evaluate the difference of resurfacing versus nonresurfacing the patella in total knee arthroplasty.