The Editor Alan J. Nixon, BVSc, MS, Diplomate ACVS, is a Professor of Orthopedic Surgery and Director of the Comparative Orthopaedics Laboratory, Department of Clinical Sciences, College of Veterinary Medicine at Cornell University in Ithaca, New York, USA, and Senior Orthopedic Surgeon at the Cornell Ruffian Equine Specialists private practice in Elmont, New York, USA.