Laminitis is a highly traumatic
and painful condition, that can affect ponies and horses, and requires
immediate first aid treatment provided by your veterinary surgeon and
farrier. Laminitis is a major vascular crisis that results in inflammation
and weakening of the laminal structures and bonds within the horses hoof.
The damage to the hoof tissue could be severe and may cause rotation and
sinking of the pedal bone. The following symptoms may indicate the
presence of laminitis:
Difficulty in walking and
turning;
Standing awkwardly with more
weight on hind legs, whilst shifting weight from one foot to another;
Hooves may feel warm to touch
with increased digital artery pulse rate;
Depression at coronary band.
The blood supply to the hoof has
been disturbed through a laminitic trigger factor that affects the horse’s
metabolism. Possible trigger factors include diet, toxaemia, stress, hoof
concussion or another condition e.g. Equine Cushing’s Disease. As
a result of metabolic disturbance, blood vessels have become constricted,
thereby reducing oxygen and other nutrients to the hoof and laminal
tissues. The laminae become damaged and weakened and pull away from the
hoof wall. The pedal bone is no longer supported by laminal
structure and begins to rotate and descend towards the sole. The
tissue in the sole of the foot becomes compressed, more blood vessels
collapse leading to further crushing and subsequent infection.