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While lameness in younger horses is often caused by injury or muscle strain related to overuse, older horses are more likely to show the effects cumulative wear-related deterioration of joint tissues and structures. Keeping the horse at a good weight, reducing workload, and using joint support supplements can help to minimize the effects of these problems.

Age-related losses in the functioning of nerves and muscles can also lead to lameness in senior horses. Even mild neuromuscular defects can result in a loss of strength and coordination, making the horse appear lame even though it is not in pain. A veterinarian can diagnose and treat neurologic signs related to disease, and supplementation with vitamin E can improve neuromuscular function in some cases. Horses that show problems with balance or coordination should not be ridden or driven, and anyone handling these horses should be extremely careful.

Conformation faults that don’t bother young horses are sometimes the cause of lameness in older equines. Crooked legs, sickle hocks, too-straight pasterns, and overly long backs are weaknesses that increase stress on other body structures, eventually resulting in strain and uneven movement. Therapeutic shoeing may ease discomfort and improve gaits, but serious faults may impact the senior horse’s usefulness to the point where the animal must be retired from use.

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