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Black walnut induced laminitis.

M E Thomsen¹, E G Davis, B R Rush

¹Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan 66506-5606, USA.

Veterinary and Human Toxicology

|February 12, 2000

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Acute laminitis in a horse was linked to black walnut shavings and prolonged ice water exposure. Continuous icing may have worsened blood flow and tissue damage, leading to euthanasia.

Area of Science:

Veterinary Medicine
Equine Podiatry
Toxicology

Background:

Black walnut ( * * * * * * * * * * * * ) is a known cause of laminitis in horses.
Laminitis is a debilitating condition affecting the equine hoof.
Prompt and appropriate treatment is crucial for managing laminitis.

Observation:

A 5-year-old Paint horse gelding developed acute laminitis following exposure to black walnut shavings.
The affected horse's feet were continuously soaked in an ice bath for 24 hours.
Serial radiographs showed progressive palmar deviation of the third phalanx and subsolar abscesses.

Findings:

The gelding exhibited purulent discharge from the coronary band and circumferential hoof wall detachment.
Treatment included anti-inflammatory and vasodilator therapy.

Related Experiment Videos

The horse was euthanized after 54 days due to the severity of the condition.

Implications:

Prolonged icing of equine hooves may decrease perfusion and increase edema, potentially exacerbating ischemic necrosis in laminitis.
This case highlights the complex interplay between environmental toxins, therapeutic interventions, and laminitis progression.
Further research is needed to elucidate the effects of cryotherapy on compromised equine laminae.