Laminitis Flashcards
What suspends P3 inside the hoof?
Interdigitating laminae
Which lamina provides vascular supply and connects basement membrane of dermal-epidermal junction to periosteum of distal phalynx?
Dermal laminae
Which lamina forms the hoof proper?
Epidermal laminae
What is the purpose of the laminae?
Support and suspend P3 and support weight of the horse
What is laminitis?
Degeneration, necrosis, and inflammation of the laminae
What is another name for laminitis?
Founder
What are the 2 broad pathophysiological hypotheses that cause laminitis?
Digital ischemia, excessive enzymatic degradation
What are infectious diseases that may result in laminitis?
Endotoxemia, acute colitis, metritis, pleuropneumonia
What endocrinopathies can cause laminitis?
Cushing’s (PPID), equine metabolic syndrome
What medications can cause laminitis?
High dose corticosteroids
What is road founder?
Laminities caused by prolonged work on hard surfaces
What causes contralateral limb founder?
Injury to one limb causes incr wt bearing on the contralateral limb
What is one toxic cause of laminitis?
Black walnut
What are clinical signs of laminitis?
Reluctance to move, shifting weight, prolonged recumbency
Which limbs are more commonly affected by laminitis? Why?
Forelimbs bear more weight than hindlimbs
Where will sensitivity to hoof testers be most obvious in a laminitis limb?
At the toe
What will you see on radiographs of laminitis?
Rotation/sinking of P3
What are laminitis dx?
Hoof abscess, severe myopathy, pleuritis
When is laminitis considered chronic?
Radiographic change visible
How do you assess rotation of P3 on rads?
Dorsal P3 and dorsal hoof wall should be parallel
What is a last resort treatment for continued rotation of P3?
DDF tenotomy
