Hoof Kinematics in Mild Lameness Diagnoses

By using hoof kinematics, researchers are developing a technique to aid in the diagnosis of mild or subclinical lameness.
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You know that nagging feeling when your performance horse is just not quite right, yet you can’t pinpoint the problem zone? Here's some good news: By using hoof kinematics, researchers at the Gail Holmes Equine Orthopaedic Research Center at Colorado State University (CSU) are developing a technique to aid in the diagnosis of mild or subclinical lameness.

“Kinematics is a branch of biomechanics which describes the motion of an object; hoof kinematics describes the motion of the hoof during locomotion,” explained Valerie Moorman, DVM, Dipl. ACVS, of CSU's Orthopaedic Research Center. “In this study, we looked at the linear motion of the hoof both forward/backward and up/down, as well as the forward/backward rotation of the hoof during motion. We examined horses at both the walk and trot and broke the stride into smaller components. Specifically, we looked at the hoof at landing, during breakover (when the foot goes from the stance to the swing phase), and during swing phase.”

In a gait-analysis laboratory, six clinically normal Quarter Horses walked and trotted over a rubber-matted asphalt runway while infrared cameras captured 3-D optical kinematic data. Researchers first viewed both forelimbs to establish a baseline. Then, the team viewed each horse as they underwent three grades of sole-pressure-induced lameness in the right forelimb and after administering a local nerve block to eliminate the lameness.

“We found significant differences in hoof motion at the most mild grade of lameness,” remarked Moorman. “By examining smaller components of the stride, we could detect changes to hoof motion both during stance and swing phases

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Freelance journalist Natalie DeFee Mendik is a multiple American Horse Publications editorial and graphics awards winner specializing in equestrian media. She holds an MA in English from Colorado State University and an International Federation of Journalists’ International press card, and is a member of the International Alliance of Equestrian Journalists. With over three decades of horse experience, Natalie’s main equine interests are dressage and vaulting. Having lived and ridden in England, Switzerland, and various parts of the United States, Natalie currently resides in Colorado with her husband and two girls.

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