Erratum to: Clin Orthop Relat Res DOI 10.1007/s11999-014-3594-x

In the Acknowledgments section of the published study, the authors should have mentioned that their research was supported by the RIH Orthopaedic Foundation and the National Institutes of Health (P20-GM104937 [COBRE Bioengineering Core]).

Also, coauthor Sarath Koruprolu’s degree was incorrect in the original publication. His correct degree is MS.

The authors apologize for these errors.