Laminitis n. : Inflammation of the laminae or fleshy plates along the coffin bone of a horse; founder.

Example:
Can a horse with a history of Laminitis be kept in a grass pasture safely?

Taxonomy
laminitis, horse, founder, hoof, coffin bone, hoof wall, Equine Laminitis, Laminitis in Horses, treatment, P3, Chronic Laminitis, hoof capsule, distal phalanx, relative rotation, mechanism, flexor tendon, bone, sensitive laminae.

Defination from the web:
Laminitis literally means inflammation of the laminae, and while it remains controversial whether this is the primary mechanism of disease, ... In some texts, the term "founder" is even used synonymously with laminitis, though such usage is technically incorrect. ...