1 Department of Orthopaedic Surgery, Duke University, Duke University Medical Center, Box 3615, Durham, NC 27710, USA. Electronic address: dean.taylor@duke.edu.
2 Department of Orthopaedics, Duke University, Durham, NC 27710, USA. Electronic address: jonathan.dickens@duke.edu.
3 Duke University, DUMC Box 3615, Durham, NC 27710, USA. Electronic address: joseph.doty@duke.edu.