Mark A Vitale1, Mani Seetharaman1, David E Ruchelsman2. 1. ONS Foundation for Clinical Research and Education, Greenwich; Greenwich Hospital, Yale-New Haven Health, New Haven, CT; Newton-Wellesley Hospital, Newton; Department of Orthopaedic Surgery, Tufts University School of Medicine, Boston, MA. 2. ONS Foundation for Clinical Research and Education, Greenwich; Greenwich Hospital, Yale-New Haven Health, New Haven, CT; Newton-Wellesley Hospital, Newton; Department of Orthopaedic Surgery, Tufts University School of Medicine, Boston, MA. Electronic address: druchelsman@partners.org.