Laminitis Flashcards
What do hooves rest on?
An underlying sensitive tissue called the corium.
What is the corium attached to?
The periosteum of P3.
What is the outer hoof composed of?
Modified epithelium.
What is the corium composed of?
Modified dermis.
What are the 5 types of corium?
- Frog.
- Sole.
- Laminar.
- Coronary.
- Perioplic.
How does the corium grow?
From the coronary band downward at a continuous rate.
What are the main underlying causes of laminitis?
- Endocrine disruption (Equine Metabolic Disorder).
- Disease leading to sepsis.
- Black walnut shavings (less common, the why is unknown).
- Support limb laminitis (when another leg is bandaged.
The loss of what type of attachments causes laminitis?
Laminar attachments between the dermis and epidermal layers of the laminar epithelium.
What is a symmetrical displacement?
When the frog sinks evenly.
What does loss of laminar attachment cause?
- Inflammation.
- Decreased laminar blood flow.
- Insulin resistance.
What is palmar/plantar displacement?
Loss of dorsal laminar attachments.
*Cannot counteract the pull of the Deep digital flexor tendon (DDFT).
What is acute laminitis?
- No displacement.
- Initial presentation.
What is subacute laminitis?
- No displacement.
- > 3 days of signs.
What is chronic laminitis?
Displacement has occurred, regardless of duration of symptoms.
What are the clinical signs of laminitis?
- Bounding digital pulse.
- Camped out appearance.
- Hooves are warm to the touch.
- Reluctance to walk.
- Extremely painful.
