Erratum to: Clin Orthop Relat Res DOI 10.1097/01.blo.0000238777.34939.82

In the original version of this article, which appeared in Volume 453, pages 35–46 (DOI 10.1097/01.blo.0000238777.34939.82), the author listed as “Michel LeDuff, MA” should be listed as “Michel J. Le Duff, MA”.