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What Is Your Diagnosis?

Holly D. Sparks DVM1, Alan J. Nixon BVSc, MS, DACVS1, and Ashlee E. Watts DVM, DA CVS1
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  • 1 Veterinary Medical Center, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.
History

A 2-year-old Quarter Horse gelding was referred to the Cornell University Hospital for Animals with a 5-week history of repeated episodes of stumbling and occasionally falling during exercise. On neurologic examination, both mentation and cranial nerve function were normal. Substantial ataxia and proprioceptive deficits were present in both the pelvic (3/4) and thoracic limbs (2/4),1 characterized by profound circumduction of the outside limb when circling, a hypermetric gait, and a marked worsening of clinical signs when the horse's head was elevated, leading to a neuroanatomic diagnosis of cervical spinal cord disease. There were moderate signs of pain

Contributor Notes

Dr. Sparks' present address is Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 1G8, Canada.

Address correspondence to Dr. Nixon (ajn1@cornell.edu).