Comment on Chen et al.: Patellar resurfacing versus nonresurfacing in total knee arthroplasty: A meta-analysis of randomised controlled trials

摘要

It is with interest that we read the meta-analysis by Chen et al. published in the June edition of International Orthopaedics [1]. Whilst we commend the authors on the amount of work that they have put into this study and congratulate them on achieving publication, it is a shame that the serious methodological issues (highlighted by previous correspondents [2, 3]) were not identified and rectified before publication.Whilst the authors conclude that "more.. .RCTs with large samples" are required to answer their study question adequately, their review has not included an RCT of 1,715 patients published in the Journal of Bone and Joint Surgery (American Volume) in August 2011 examining precisely the same question [4].