The stance of a horse changes the way his body mechanics work and soundness is compromised. When horses are standing in a normal, neutral posture, their hips are aligned over their ankles, their shoulders and pelvis are evenly balanced and they're able to quickly move their feet and whole body to respond to stimuli. A poor stance can lead to irregularities in the legs, hips and spine, which can further compromise the horse's biomechanics and movement ability.