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J Equine Sci. 2019 Mar;30(1):7-12. doi: 10.1294/jes.30.7. Epub 2019 Apr 03.

A Thoroughbred racehorse with a unicortical palmar lateral condylar fracture returned to training 14 days after surgery: a hypothesis on the role of a single bone screw on crack propagation.

Journal of equine science

Holly R Brown, John G Peloso, Will Clay- Werner, John J Mecholsky, Noah D Cohen, James B Vogler

Affiliations

  1. Equine Medicine & Surgery, LA 71111, U.S.A.
  2. Equine Medical Center of Ocala, FL 34482, U.S.A.
  3. Equine Medicine & Surgery, Texas 79549, U.S.A.
  4. Department of Materials Science and Engineering, University of Florida, FL 32611, U.S.A.
  5. College of Veterinary Medicine, Texas A&M University, TX 77801, U.S.A.
  6. The Orthopedic Institute, FL 32607, U.S.A.

PMID: 30944541 PMCID: PMC6445752 DOI: 10.1294/jes.30.7

Abstract

A 2-year-old Thoroughbred racehorse had LF lameness that began post high-speed exercise and persisted for two days before the horse once again became sound. Diagnostic analgesia localized the lameness to the LF distal metacarpus, and a standing MRI identified a unicortical condylar fracture. A single 5.5 mm cortical screw was placed in lag fashion. The horse began hand walking at 14 days, racetrack jogging at 30 days, and racing at 5 months after the day of surgery. Placement of a single lag screw ahead of the tip of the crack in unicortical condylar fracture may be useful for reducing the recovery period for horses returning to training and racing.

Keywords: MRI; crack propagation; fracture

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