Are hunter bumps considered a blemish or an unsoundness?

A hunter’s bump is technically known as sacrcoiliac subluxation. It is a tearing of the fibrous attachment that holds the pelvis and spine of the horse together. Once the attachment is loosened, the pelvis of the horse actually shifts out of place causing the characteristic “bump” on the horse’s rump that you are referring to. The bump is actually the bony prominence of the pelvis which becomes more visible after this subluxation happens.
This injury is most common in jumping …