Sacroiliac Joint Motion and Pelvic Deformation, AAEP 2008

An equine athlete uses the pelvis and sacroiliac (SI) joint in many different fashions: A rope horse uses the pelvis to rapidly accelerate and decelerate, a Standardbred races at high speed at a constrained gait, and a dressage horse exercises with repetitive and isometric control of his haunches. Furthermore, a vaulting horse is constrained to a circle, but he must provide stability of

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An equine athlete uses the pelvis and sacroiliac (SI) joint in many different fashions: A rope horse uses the pelvis to rapidly accelerate and decelerate, a Standardbred races at high speed at a constrained gait, and a dressage horse exercises with repetitive and isometric control of his haunches. Furthermore, a vaulting horse is constrained to a circle, but he must provide stability of his back, a jumping horse requires large propulsive forces to use his rear legs to launch over a jump, and a Thoroughbred racehorse at a high-speed run experiences lots of forces through his pelvis, while a cutting horse needs agility and fine-tuned proprioceptive control and balance during rapid hind limb movements. At the 2008 American Association of Equine Practitioners convention, held Dec. 6-10 in San Diego, Calif., Kevin Haussler, DVM, DC, PhD, an assistant professor at Colorado State University, discussed the relationship between motions at the SI joint to deformation of the pelvis in the exercising horse.

 

Sacroiliac joint diagram

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Written by:

Nancy S. Loving, DVM, owns Loving Equine Clinic in Boulder, Colorado, and has a special interest in managing the care of sport horses. Her book, All Horse Systems Go, is a comprehensive veterinary care and conditioning resource in full color that covers all facets of horse care. She has also authored the books Go the Distance as a resource for endurance horse owners, Conformation and Performance, and First Aid for Horse and Rider in addition to many veterinary articles for both horse owner and professional audiences.

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