This shoulder blade is far too upright. Changing
the angle of the shoulder blade has a significant effect on length of stride. You might ask
why that is the case. Well it’s this joint right here that affects that. And because
this is the self limiting joint, it is not unlike your two fists setting together like
this. That humerus, or the arm of the horse, can only go as far forward as that joint
will allow it. The more this is laid back, if I have a shoulder like this, that’s how
far the humerus can go forward. If I have a shoulder like this, that’s how far the humerus
can go forward. Which greatly increases the range of motion in the front leg.