Notice of Retraction

Y Chen, Y Zhang, Y-L Zhu, et al : Efficacy and safety of an intra-operative intra-articular magnesium/ropivacaine injection for pain control following total knee arthroplasty. J Int Med Res 2009; 37: 1733 – 1741.

The Journal of International Medical Research and authors of the above-mentioned article have agreed to retract the above-mentioned article from publication.

The reason for this is that The Journal of International Medical Research has learned that the data provided by the authors relate to a different study that they carried out and not the one reported. This appears to have arisen through honest error by the authors.

The data that appear in the above-mentioned article are incorrect in the context of this article and should not be used.

The replacement paper with correct data is published in the current issue:

Y Chen, Y Zhang, Y-L Zhu, et al : Efficacy and safety of an intra-operative intra-articular magnesium/ropivacaine injection for pain control following total knee arthroplasty. J Int Med Res 2012; 40: 2032 – 2040.