Carrying this farther…adding the reason for my inquiry…
I think underrun heels are managed-and often managed very well…that is not what I am debating (just to be clear).
I am beginning to believe (which is why I went through all the photos I have and started looking over case studies on websites from all different ‘methods’) that the angle of growth at the heels is genetic or set at some point shortly after birth.
The angle, if shallow, will cause ‘underrun heels’ if allowed to grow and grow…a horse gets trimmed and the ground contact point is brought back (because the heel trimmed shorter)…if you just look at how angles work, a shorter heel will bring the ground contact point back…
BUT if you look at any photo, the angle that the heels comes out is still the same.
I have photos of mine for many years (and over many methods) and I have short heels and longer heels-but at any point in time if you carry the angle of the short heels out, they are at the same angle as the longer heel.
I don’t know why but suspect it is just how the foot is made-like all of us have different shaped feet-or may be connected to the genetic makeup of the internal structures.
Or perhaps it can be influenced in the first few days of a foal, maybe weeks or a couple of months…I don’t have photos that go back that far.
I don’t think it ‘matters’ because it is managed…but I don’t believe it is ‘cured’…
I have been discussing this with a friend that has been trimming for more years than I with literally hundreds of horses in her data base-she has observed the same thing.
Farriers, trimmers? anyone?