Groundbreaking research at the University of Wisconsin-Madison is transforming the diagnosis and prevention of equine injuries. A UW-Madison-developed standing CT scanner, commercially available since 2019, is enabling safer and more precise imaging for horses, reducing risks associated with traditional methods.
“Standing CT scanning allows us to identify injuries in horses early, often before symptoms appear,” explained Dr. Peter Muir, co-director of UW’s Comparative Orthopedic Research Laboratory. “This technology is particularly important for diagnosing lameness and stress fractures in athletic horses, like racing Thoroughbreds.”
Lameness, a common issue among horses, can arise from various factors, making accurate diagnosis challenging. CT imaging provides veterinarians with detailed insights that were previously unavailable. Unlike traditional radiographs, the scanner detects subtle bone changes linked to fatigue injuries, which can progress into serious fractures if left untreated.
This advancement holds significant promise for the equine racing industry, where public scrutiny has heightened concerns over horse welfare. “Fatal injuries during high-profile races have raised global awareness,” said Dr. Muir. “Our research focuses on injury prevention, giving racing authorities tools to ensure horse safety.”
In collaboration with Racing Victoria in Australia, UW-Madison’s technology has already shown success. Since implementing routine CT scanning, the prestigious Melbourne Cup has reported no fatal injuries over the past four years. “It’s a step forward for safety in racing,” Dr. Muir added.
The scanner’s design accommodates standing horses, eliminating the need for general anesthesia—a risky procedure for equines. Mild sedation allows for quick recovery and routine use, making it a practical choice for diagnostic imaging. “More horses are receiving specific diagnoses, leading to targeted treatment plans,” noted Dr. Muir.
Veterinary students at UW-Madison play an integral role in this progress. Through clinical rotations as well as research projects, they gain hands-on experience with the CT scanner and its applications. “This involvement prepares the next generation of veterinarians to advance equine care,” said Dr. Muir.
Looking ahead, Dr. Muir’s team is expanding their work with support from the Grayson Jockey Club Research Foundation. Their latest research uses computer models to analyze stress fractures in the proximal sesamoid bone, helping to refine injury prediction methods.
“While more work remains, we’re optimistic about the future of equine health,” concluded Dr. Muir. “These innovations bring us closer to ensuring the safety and well-being of athletic horses worldwide.”
