Acromion Physiology

You were born with some type of acromion, whether it be a type 1 (which is flat), a type 2 (which is curved), or type 3 (which has more of a hook at the end) and it’s going to be the same on both sides. That’s just the way you’re born. You cannot know what type of acromion you have without getting x-rays of the shoulder. There’s a certain view we look at called the Scapular Y View, which is when we see the scapula and it looks like a “Y” because we’re looking at it from the side. That allows us to see the acromion from the side and that is when we can determine what type of acromion a patient has.