Your missing my point. Breaks, medically, do not exist. They are all fractures. You can have a bone sticking clear out the skin and that's an open complete fracture. Anything from bone chips to shattered bones are fractures (avulsions and complex, respectivly) Doctors or vets might use the term 'break' because it's a layman phrase. Doesn't change anything about your mare, but that was scl's point.