Erratum to: Clin Orthop Relat Res DOI 10.1007/s11999-012-2691-y
Funding for this study was received from the National Natural Science Foundation of China (Grant No. 30901414). The authors apologize for this omission in their funding statement for this article.
Footnotes
The online version of the original article can be found under doi:10.1007/s11999-012-2691-y.
