Study: MRI Beneficial for Diagnosing Some Leg Lamenesses

MRIs picked up a wider range of abnormalities in some lame horses than did X rays or ultrasounds.
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Chronic lameness can be a frustrating problem for owners of equine athletes. When nerve blocks, radiographs (X rays), and ultrasounds yield no definitive answers, where can a veterinarian turn next? According to recent study results, magnetic resonance imaging (MRI) appears to be a beneficial next step for diagnosing some leg lamenesses when a veterinarian cannot provide a definitive diagnosis for the lameness using conventional techniques.

"An accurate diagnosis enables the veterinarian to estimate prognosis and to advise on appropriate treatment and management," said Annamaria Nagy, DVM, MRCVS, of the Center for Equine Studies at the Animal Health Trust in Newmarket, Suffolk, U.K.

An MRI produces three-dimensional images of bone and soft tissue, while radiographs produce two-dimensional images that detect bone problems. Alternatively, ultrasonography can visualize muscles, tendons, and many internal organs to capture their size, structure, and any lesions.

"There is limited information on magnetic resonance imaging (MRI) findings in the carpus (knee) and proximal metacarpal region (upper cannon bone) of lame horses," Nagy noted

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