Martinus Richter, MD, PhD, Department of Foot and Ankle Surgery, Hospital Rummelsberg, Schwarzenbruck, GermanyFrancois Lintz, MD, FEBOT, Clinique de l'Union, Foot and Ankle Surgery Centre, Toulouse, FranceCesar de Cesar Netto, MD, PhD, Department of Orthopedics and Rehabilitation, University of Iowa Carver College of Medicine, Iowa City, IA, USAAlexej Barg, MD, Department of Orthopedics, University of Utah, Salt Lake City, UT, USAArne Burssens, MD, Department of Orthopedics and Traumatology, University Hospital Ghent, Ghent, BelgiumScott Ellis, MD, Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA