Effects of Racing Surface and Turn Radius on Fatal Limb Fractures in Thoroughbred Racehorses

Michael Peterson, Wayne Sanderson, Nurlan Kussainov, Sarah Jane Hobbs, Patti Miles, Mary C. Scollay and Hilary M. Clayton
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Michael Peterson: Biosystems and Agricultural Engineering and UK Ag Equine Programs, University of Kentucky, Lexington, KY 40546, USA
Wayne Sanderson: Biosystems and Agricultural Engineering and UK Ag Equine Programs, University of Kentucky, Lexington, KY 40546, USA
Nurlan Kussainov: Biosystems and Agricultural Engineering and UK Ag Equine Programs, University of Kentucky, Lexington, KY 40546, USA
Sarah Jane Hobbs: Centre for Applied Sport and Exercise Sciences, University of Central Lancashire, Preston, Lancashire PR1 2HE, UK
Patti Miles: Maine Business School, University of Maine, Orono, ME 04469, USA
Mary C. Scollay: Racing Medication and Testing Consortium, Lexington, KY 40507, USA
Hilary M. Clayton: Sport Horse Science, Mason, MI 48854, USA

Sustainability, 2021, vol. 13, issue 2, 1-16

Abstract: North American Thoroughbred racing is conducted on three types of surfaces—dirt, turf, and synthetic. The tracks are oval, and races are run counterclockwise. The loading on right and left limbs is expected to differ as a function of turn radius, banking, surface, and gait asymmetry. Hind limbs and forelimbs also have different functions related to propulsion and turning, respectively. This study uses the Equine Injury Database for race starts from 1 January 2009 through 31 December 2014, to compare injury rates across participating North American racetracks. The data are limited to catastrophic injuries in which horses died or were euthanized due to a fracture within 72 h of the start of the race. Overall injury rates were lower on turf and synthetic surfaces and the pattern of limb injuries in left vs. right and fore vs. hind limbs were different. Regardless of surface, forelimbs were more likely to fracture. Dirt surfaces showed higher rates of forelimb injuries compared to other surfaces, hind limbs were more likely to experience a fatal fracture on turf than on dirt. The left fore and right hind limbs were more likely to experience a fatal fracture but only on dirt surfaces.

Keywords: Thoroughbred; musculoskeletal; racetrack; turning; laterality (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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