Hilary Clayton, a professor in the equine sports medicine department at Michigan State University, has conducted research that shows the same effect can be achieved in horses. Humans recovering from back injury have benefited from physical therapy aimed at reactivating muscles that stabilize the vertebrae. Ruling out this factor may clarify training decisions such as whether to give the horse a break or try a different approach to teaching a new skill. Because back pain can be indicated by a range of behaviors, owners should consider the possibility that back pain might be a cause of resistance, other training problems, or lameness elsewhere, such as the hocks. Over the course of time, instability increases the horse’s risk for developing arthritis in these joints.Ī veterinarian should always perform an examination of a horse that shows signs of back pain. When pain occurs, the multifidus muscles fail to stabilize the intervertebral joints as efficiently as they should, and they tend not to recover full function even after the pain has been relieved. The multifidus muscles form a deeper layer and instead of influencing the whole back, each one of these shorter muscles controls only a few vertebrae and the joints between them. These muscles function to flex the horse’s back in both horizontal and vertical planes. In horses, the longissimus and iliocostalis muscles lie parallel to the spine for the entire length of the back. When pain and inflammation restrict the action of these muscles, the job of stabilizing the back falls to other muscle groups that are less able to perform this function. Horses that develop back pain from being ridden may have strained some of the muscles that help to move and stabilize the back. A veterinarian can often diagnose back pain in a horse, but in some cases, even a professional may have trouble telling just where the horse’s pain is.īack pain in horses can be caused by a number of factors including arthritis, malformed vertebrae, injuries, overwork, improper saddle fit, or a training program that asks for a higher level of performance than the horse has been prepared for. Some of these signs are more subtle than others, and they may come and go over the course of time, making it difficult for owners to pinpoint what is causing them. Wringing the tail, throwing the head, jigging, bolting, not standing still to be tacked up or mounted, refusing to pick up a lead or a gait…these are only a few of the behaviors horses might show when they have back pain.
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