Originally Posted by Trinity3205
Founder (defined as rotation of the coffin bone due to lamina attachment of bone to wall failure)
^Just adding that 'founder' doesn't *necessarily* have to include 'rotation', although many - inc some vets - don't seem to recognise it if it doesn't. The term 'founder' came from the shipping term, literally means 'sink' & the bone can 'sink' in the hoof capsule(or the hoof capsule is pushed up around it, if you want to see it that way) without 'rotation' of the bone(or the wall away from the bone if you want to see it that way). Eg. Many(many) racehorses are 'sinkers', effectively suffering founder but without rotation.
Oh OP re definitions, you may be confused because people use the terms founder & laminitis differently. Medically, laminitis is the correct term & there are just different degrees of it - eg. Chronic laminitis with rotation - and 'founder' is the lay term. But many people think of laminitis as the initial inflammation(literally 'itis' is inflammation) & founder as the mechanical changes that can come out of it.