1 Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA. Electronic address: mark.wu@duke.edu.
2 Department of Orthopaedic Surgery, Medical University of South Carolina, Charleston, SC, USA.
3 Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC, USA.
4 Departmnt of Orthopaedic Surgery, Loyola University Medical Center, Burr Ridge, IL, USA.
5 Clínica Universidad de los Andes, Servicio de Traumatología y Ortopedia, Centro de Tobillo y Pie, Chile; Hospital Clínico Universidad de Chile, Servicio de Traumatología y Ortopedia, Unidad de Tobillo y Pie, Chile.