MAGNETIC RESONANCE IMAGING FINDINGS OF DESMOPATHY OF THE COLLATERAL LIGAMENTS OF THE EQUINE DISTAL INTERPHALANGEAL JOINT

Authors

  • Santiago D. Gutierrez-Nibeyro,

    1. Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, P.O. Box 1938, Leesburg, VA 20177.
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  • Nathaniel A. White II,

    1. Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, P.O. Box 1938, Leesburg, VA 20177.
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  • Natasha M. Werpy,

    1. Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, P.O. Box 1938, Leesburg, VA 20177.
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  • Laurie Tyrrell,

    1. Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, P.O. Box 1938, Leesburg, VA 20177.
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  • Kent A. Allen,

    1. Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, P.O. Box 1938, Leesburg, VA 20177.
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  • Kenneth E. Sullins,

    1. Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, P.O. Box 1938, Leesburg, VA 20177.
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  • Richard D. Mitchell

    1. Marion duPont Scott Equine Medical Center, Virginia-Maryland Regional College of Veterinary Medicine, P.O. Box 1938, Leesburg, VA 20177.
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  • Dr. N.M. Werpy's present address is Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523.

  • Dr. L. Tyrrell's present address is Virginia Equine Imaging, P.O. Box 835, Middleburg, VA 20118.

  • Dr. K.A. Allen's present address is Virginia Equine Imaging, P.O. Box 835, Middleburg, VA 20118.

  • Dr. R.D. Mitchell's present address is Fairfield Equine Associates, 32 Barnabas Road, Newtown, CT 06470.

Address correspondence and reprint requests to Dr. Santiago D. Gutierrez-Nibeyro, at the above address. E-mail: gutierre@vt.edu

Abstract

We report the use of a low-field magnetic resonance (MR) imaging system for the detection of desmopathy of the collateral ligament of the distal interphalangeal joint and the long-term outcome. Twenty horses were studied and their medical records and MR images were reviewed retrospectively. Long-term follow-up information was obtained by telephonic questionnaires of owners, trainers, or referring veterinarians. Desmopathy of the medial collateral ligament (80%) and enthesopathy of the affected collateral ligament (80%) were common MR imaging features. Treatment consisted of stall rest followed by a rehabilitation period. Additional treatments included shoeing, extracorporeal shock wave therapy, application of a half limb or foot cast, and medication of the distal interphalangeal joint. Twelve (60%) horses returned to their previous level of exercise and maintained their previous level, whereas eight horses had a poor outcome. Low-field MR imaging in the standing patient can be used to detect collateral ligament desmopathy of the distal interphalangeal joint without a need for general anesthesia.

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