The high-low condition is mostly identified in the front feet, where it seems to be exaggerated the most, but usually also affects the hinds.
For some horses, that will translate in a club foot, for others, it can be an extremely flat, run forward foot. It can also be a very mild difference between the 2 fronts.
We mostly tend to think the “abnormal” looking foot (too clubby or too flat) as the problem foot. When this is not true in most cases.
Hi/Lo or High Low or HLS (High Low Syndrome) is mainly a whole body problem that is most visible in the feet.
Here are the most common causes identified:
Teeth problems, chiro imbalances, how the foal is placed in the mare’s womb, trimming problems, saddle fitting issues, rider’s asymmetrical body, and so on 😅
It can be helped by treating the causes but of course, the body will have adapted to this crookedness. So give it time to evolve without over stressing the body.
Here I highlighted in orange how the extensor branch of the suspensory ligament is being strained. It doesn’t mean a huge immediate correction of the “high heels” is beneficial though. On the contrary, by taking off too much heels, it can lead to serious soft tissues damage.