Most of the time when we think of a winged scapula, we simply think of weak serratus anterior muscles. But the longer you are in practice, the more you notice posture and become a better “muscle whisperer.” And then you begin to realize so much more. Let’s explore the posture impairment of winged scapula as it relates to the serratus anterior, rhomboids, lower trapezius, and pectoralis muscles.
The biggest tip I can offer you to look for during static posture evaluation for scapular winging is this: If you can see the entire medial border of the shoulder blade, you should suspect serratus anterior dysfunction. If you see only a portion of the medial scapular border or the inferior angle (usually the lower half or third of the medial scapula border), then you should suspect excessive shortness of the pectoralis minor, and lower trapezius and serratus anterior muscle weakness dysfunction. Again, if you only see half or a third of the scapula border protruding away from the rib cage, this is known as “pseudo-winging” and implicates shortness of the pectoralis minor, along with lower trapezius and serratus anterior underactivity or weakness…More