Why do horses get contracted heels?
Several reasons. If they dont land heel first, the heels can not expand properly. If the heels have been left to grow too long, they prevent frog contact and expansion. If they run forward or under, they cant expand outward at all but rather they are pushed inward at the ground with every step. Those shiny places you may see in the heels of some shoes is not usually from the heels moving outward, but inward. That inward curling doesnt happen with the heels trimmed short, near the level of the live sole and if the frog is on the ground.