Erratum to: Bilateral Clubfeet Are Highly Correlated: A Cautionary Tale for Researchers

The article ‘‘Bilateral Clubfeet Are Highly Correlated: A Cautionary Tale for Researchers’’ (Clin Orthop Relat Res 2014, epub ahead of print, DOI 10.1007/s11999-014-3776-6) contained important areas of overlap with the article ‘‘Unilateral Versus Bilateral Clubfoot: An Analysis of Severity and Correlation,’’ which was published in a volume of the Journal of Pediatric Orthopaedics (British) (2014, 23:397–399). This was not made clear in the CORR article. In particular, 26 of the 33 patients whose data were included in the study published in CORR were included in the earlier work published in Journal of Pediatric Orthopaedics (British). This is particularly relevant to the question of clubfoot severity at the time of patient presentation, which was studied in both papers. The authors regret that they did not make this clear in the later publication in CORR.