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Hoof kinetic patterns differ between sound and laminitic horses.

Mohamad Al Naem1, Lutz-Ferdinand Litzke1, Klaus Failing2

  • 1Equine Clinic (Surgery, Orthopedics), Faculty of Veterinary Medicine, Justus-Liebig-University, Giessen, Germany.

Equine Veterinary Journal
|June 17, 2020
PubMed
Summary

Laminitic horses show altered hoof loading patterns, with peak pressure shifting from the toe during midstance to break-over. Supportive therapy should address caudal and middle hoof areas to manage pressure and ease break-over in horses with laminitis.

Keywords:
Hoof™ Systemhorselaminitisload distribution pattern

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Area of Science:

  • Equine biomechanics
  • Veterinary orthopedics

Background:

  • Kinetic data on hoof loading in horses with laminitis is lacking.
  • Understanding hoof loading is crucial for optimizing supportive shoeing therapies for laminitis.

Purpose of the Study:

  • To quantify and compare the load distribution patterns in the hooves of laminitic and sound horses during walk.

Main Methods:

  • A controlled observational study involved 54 horses divided into control (sound), acute laminitis (G1), and recovered laminitis (G2) groups.
  • Kinetic parameters were measured on barefoot forelimbs using the Hoof™ System during walking.
  • Statistical analyses (covariance, t tests) compared hoof regions and groups (P < .05).

Main Results:

  • Laminitic horses experienced peak toe loading during break-over, unlike controls where it occurred during midstance.
  • Time to peak vertical force in the toe was longer in laminitic horses (G1, G2) compared to controls.
  • Relative vertical force in the toe was significantly lower in laminitic horses (G1, G2) than in controls, with load shifting to middle hoof regions.

Conclusions:

  • Hoof loading patterns differ significantly between laminitic and sound horses, particularly in the timing and distribution of toe pressure.
  • Supportive therapy for laminitis should focus on reducing peak pressure in caudal and middle hoof areas and facilitating break-over.
  • No significant kinetic differences were observed between horses in acute recovery (G1) and those recovered for 6-12 weeks (G2).