Lameness in horses is not a specific condition in horses per se, but typically indicates deeper pathology in the musculoskeletal system. A horse is said to be lame when its normal stance or gait is changed by a problem in one or more of the limbs, the neck, the trunk, or the quarters—and pain is the most common cause of a horse presenting in this manner. Pain may arise from short-term injury, mechanical lameness (e.g., the result of damaged connective tissues or an abnormality in anatomy) or neuromuscular disorders. 

Physically-immature horses that are subjected to repetitive stress due to activity have been prone to lameness. Certain breeds of horses and those occupying specific areas of discipline are more commonly predisposed to developing lameness conditions. Orthopedic disease, poor conformation, improper hoof balance or shoeing and failure to adequately condition performance horses can also cause lameness.^1-3

A high percentage of lameness in the forelimb of the horse originates in the hoof.² Of particular concern is laminitis, a common and potentially devastating foot problem that affects all members of the equine family. The disease process involves a breakdown of the bond between the hoof wall and the distal phalanx. Forelimb lameness is often easier to recognize than hind limb lameness because the mechanics of the forelimb causes lameness to be recognizable and more obvious to the casual observer. Hind limb lameness is much more difficult to recognize and diagnose, particularly when subtle upper hind limb functions are involved. The large musculature of the horse’s upper hind limb makes it harder to detect damage and anomalies, even using radiographs and ultrasound.³

Lameness in horses accounts for hundreds of millions of dollars in economic losses in the equine industry each year. Lameness can range from subtle, to reduced performance, to loss of use, to chronic severe pain ultimately resulting in euthanasia. 

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This product carries numerous potential drug interactions. Please consult your veterinarian prior to beginning any treatment regimen.

FOR RX ONLY: A valid prescription from a licensed veterinarian is required for dispensing this medication.

¹Merck Veterinary Manual.

²aaep.org.

³equimanagement.com.