Chronic laminitis is classically defined as the case in which distal phalanx displacement has occurred regardless of the duration of the disease.
Chronic laminitis definition.
Treatment response during this time determines if the horse will go into the subacute phase or chronic phase.
These horses typically have a past history of laminitis from which they have recovered and are sound in the warmer times of the year but the arrival of cold weather triggers the pain.
Clinical laminitis may be prevented if cryotherapy icing is initiated during the developmental phase.
Subacute laminitis is commonly used to define laminitis in which clinical signs have continued 3 days but the horse still has no distal phalangeal displacement.
Chronic laminitis a horse with chronic laminitis will show signs of ongoing symptoms that are generally a result of a relapse from previous attacks.
Damage to the circulation caused by laminitis may be behind a fairly common form of chronic laminitis pain winter laminitis.
The acute phase is the first 72 hours following the initiation of clinical signs.
Chronic laminitis represents the situation in which disease of the hoof lamellar interface has resulted in abnormal hoof growth or deformity and may nor may not be associated with pain lameness.
In equine laminitis belknap wiley blackwell 2017 1 philip johnson gives this definition.
The horse s hoof will have the appearance of growth rings around the hoof wall which generally indicates that it has suffered from laminitis in the past.
The terms laminitis and founder are used interchangeably.
Symptoms will change as laminitis progresses from acute to chronic.
However founder usually refers to a chronic long term condition associated with rotation of the coffin bone whereas acute laminitis refers to symptoms associated with a sudden initial attack including pain and inflammation of the laminae.
