5 Conditions Affecting Equine Muscles
Fibrotic myopathy occurs secondary to an injury of the semitendinosus or semimembranosus hamstring muscles, where the muscle cells start to join the connective tissue of the tendon attaching the muscle to the tibia.
“The muscle-tendon junction is the weakest part in the muscle and most susceptible to strain and tearing,” says Stephanie Valberg, DVM, PhD, Dipl. ACVIM, ACVSMR, of Michigan State University’s McPhail Equine Performance Center, in East Lansing. “This type of injury often occurs during exercise requiring sudden turns and sliding stops.”
You can spot affected horses just by the way they walk. Instead of the foot of the affected hind limb moving forward and touching the ground smoothly, it stops abruptly during the anterior phase (as the leg reaches forward) of the stride. This causes the leg to jerk suddenly to the ground, creating a characteristic hoof-slapping
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