Nicholas C. Danford, MD, Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, NY, USA Justin K. Greisberg, MD, Professor of Orthopedic Surgery, Columbia University Irving Medical Center, New York, NY, USA Charles M. Jobin, MD, Associate Professor of Orthopedic Surgery, Columbia University Irving Medical Center, New York, NY, USA Melvin P. Rosenwasser, MD, Carroll Professor of Orthopedic Surgery, Columbia University Irving Medical Center, New York, NY, USA Marcella D. Walker, Associate Professor of Medicine, Division of Endocrinology, Columbia University Irving Medical Center, New York, NY, USA