Shoulder Anatomy: Subscapularis
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MUSCLE OF THE DAY: Subscapularis (one of the four rotator cuff muscles. “Sub” means below / under. The scapula sits on the posterior side of the body with the SUBscapularis residing on the posterior side of the bone / anterior surface from the anatomical position).
Origin: Subscapular Fossa Scapula
Insertion: Lesser Tuberosity of the humerus (whereas the other 3-RC muscles insert into the Greater Tuberosity Humerus.
Actions: Internal Rotation, Adduction & Extension.
Common Injuries to the Rotator Cuff Muscles (Subscapularis):
Here's a great video from our partners at The (P)ReHab Guys reviewing some shoulder stability rehab exercises. Listen to what they have to say about shoulder strengthening, “QUESTION: “Why is it important to keep a stable scapula?” . Think of it like this. If you were required to walk on a bunch of bosu balls to get to the opposite side of the room, wouldn't you think it would require more overall demand in comparison to walking on a firm or stable surface? Same idea applies with the shoulder. The Shoulder (Gleno-humeral) moves off of the Scapula. The scapula is a free floating bone, when this isn't stabilized your shoulder must work extra hard. #StabilizeProximally . What is the first joint that you loaded as a baby? Your Shoulders! It has been a while and it’s time to get back to loading those shoulders! A closed chain exercise is a great way to really feel the scapular stabilizers activate.” The Pre Hab Guys. Learn more about shoulder anatomy and injuries here&
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