Accuracy of Suspensory Ligament Measurements via Ultrasound

Obtaining accurate ultrasound measurements of the upper suspensory ligament is challenging, research shows.
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When it comes to equine injuries in the proximal (upper) suspensory ligament (PSL), many veterinarians rely on ultrasonography (US) to diagnose and monitor the problem. But obtaining accurate US measurements of the PSL could be a challenge, even for experienced operators, according to the results of a recent German study.

"Despite recent improvements in the diagnosis of proximal suspensory desmitis using a combination of advanced imaging modalities such as computed tomography, scintigraphy, and magnetic resonance imaging, US remains the imaging technique used most frequently," said Johanna Zauscher of the equine clinic at the Free University of Berlin Faculty of Veterinary Medicine and lead researcher of the study.

The researchers aimed to evaluate inconsistencies within and between two experienced US operators while they measured several dimensions of the PSL using US longitudinal and transverse scans. On two separate occasions, the operators imaged and then measured multiple PSL dimensions (thickness from front to back ; length from outside to inside ; cross-sectional area; and circumference) in all four limbs of eight horses.

Altogether, each operator took 588 forelimb and 364 hind-limb measurements. Upon analyzing the data, the research team found multiple discrepancies both within and between the two operators

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Casie Bazay is a freelance and young adult writer, as well as a certified equine acupressure practitioner. She also hosts a blog, The Naturally Healthy Horse. Once an avid barrel racer, she now enjoys giving back to the horses who have given her so much.

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