The Horse

MAR 2019

The Horse:Your Guide To Equine Health Care provides monthly equine health care information to horse owners, breeders, veterinarians, barn/farm managers, trainer/riding instructors, and others involved in the hands-on care of the horse.

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YOUR GUIDE TO THE 2018 AAEP CONVENTION A14 March 2019 The Horse | AAEP Wrap-Up TheHorse.com/AAEP2018 arytenoids open but don't always stay there) using scopes from 10,862 yearlings and 1,905 2-year-old Thoroughbreds at a New Zealand sale. Of those, 917 had Grade-3 laryngeal movement and 1,601 had Grade-1 or -2 laryngeal movement. They compared the Grade-3 horses' rac- ing performance with that of Grade-1 and -2 horses in the same sale, finding: ■ No significant differences between the groups' starts, wins, earnings, or strike rates (number of wins vs. starts); and ■ No significant differences between the groups in the proportion of horses that won a race or did not race. In sum, "future racing performance is not significantly different between horses with laryngeal movements Grade 3 and less than 3," Anderson said. Neck Arthritis in Sound Jumpers Researchers recently determined that mild neck OA was a common finding in sound, healthy Warmblood jumpers. Pablo Espinosa-Mur, DVM, Dipl. ACVS, ECVS, of the University of California, Davis, School of Veterinary Medicine, and team assessed 105 horses (average age of 10.3), evaluating neck range of motion manually and joint effusion (swelling) or capsule thickening on radiographs and ultrasound, finding: ■ Cervical articular process joints be- tween the C6 and C7 vertebrae—the final two in the lower neck (part of C7 articulates with part of the first rib head)—were the most common OA sites, followed by joints between C5 and C6 and C4 and C5 (mid- to low-neck); ■ 46 horses had radiographic evidence of OA at C6-C7; of those, 22 had mild OA and 24 had moderate to severe OA; ■ 37 horses had ultrasonographic evi- dence of joint effusion at C6-C7; ■ 36 had mild joint capsule inflamma- tion, known as capsulitis, at C6-C7; and ■ There was no association between age or range of motion and the presence of OA and/or joint effusion or capsulitis. "This study showed that mild OA of the caudal (toward the rear) cervical region is not rare in performing sound Warm- bloods," Espinosa-Mur said. "Our results could guide veterinarians when evaluat- ing asymptomatic (those without clinical signs) horses, such as in prepurchase radiographic examinations." Espinosa-Mur said if clinical signs are evident, vets might recommend intra- articular (joint) injections, non-steroidal anti-inflammatory drugs, or rest, depend- ing on the horse. h ONLINE extras Visit TheHorse.com/AAEP2018 ■ Working Up Poor Performance in English Sport Horses, TheHorse.com/166344 ■ Is Muscle Disease Contributing to a Horse's Poor Performance? TheHorse.com/166342 · High viscosity solution of Hyaluronic Acid, Chondroitin and Glucosamine · Veterinarian trusted since 2006 · Patented formulation For more information, visit www.bimedaequine.com or call 1-888-524-6332. in their joints. Winning in their blood. Veterinary Use Only. Patent Nos.: 6,979,679 / 7,485,629 / 8,455,458. CAUTION: This device is restricted to use by or on the order of a licensed veterinarian. WARNING: Do not administer to animals that are to be slaughtered for use in food. Keep out of reach of children. *Polyglycan ® is a registered trademark of Bimeda, Inc. All rights reserved. © 2019 Bimeda, Inc. Global Excellence in Animal Health

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