1. From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine (Keegan, Wilson DA, Kramer, Bacon-Miller), and the Department of Physical Medicine and Rehabilitation, Rusk Rehabilitation Center (Wilson DJ, Smith), University of Missouri, Columbia, MO 65211; the Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506 (Gaughan, Lillich, Davis, Valentino, van Harreveld); and the Department of Large Animal Clinical Sciences...