Subscapularis | Anatomy | Actions | Insertion | Origin

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The motion of the upper arm and shoulder is controlled by way of a group of 4 muscular tissues that make up the rotator cuff. The largest and strongest muscle in this group is the Subscapularis muscle. This triangle usual muscle starts off evolved inside the scapula, positioned on the underside of the shoulder blade, and extends as much as the humerus, located at the front of the better arm. The function of the muscle is to stabilize and rotate the shoulder joint to allow the arm to turn inward. Whilst the arm is extended, it draws the humerus forward and downward. It additionally prevents the dislocation of the head of the humerus. The main arteries that run thru the Subscapularis muscle are the cervical artery and the subscapular artery. The Subscapularis muscle is innervated by using the decrease and top subscapular nerves.




Subscapularis – Anatomy:

The Subscapularis is one among 4 muscle tissues that make up the rotator cuff, together with the supraspinatus, infraspinatus and the teres minor muscle tissue. In my dissection seminars, I always highlight the Subscapularis, which is the maximum anterior of the rotator cuff muscle tissues. Its miles a thick triangular muscle that attaches medially to the anterior or coastal floor of the scapula on the subscapular fossa; it forms part of a posterior wall of the axially. Laterally, it attaches to the lesser tubercle of the humerus and the lower half of the shoulder joint pill.



Subscapularis – Actions:

The Subscapularis is essentially accountable for medially rotating and adducting the arm. It moreover permits retaining the humeral head in the glenoid cavity. To test for shortening inside the Subscapularis it is vital to evaluate each abduction and outside rotation.

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Subscapularis – Origin:

Subscapular fossa of scapula.


Subscapularis – Insertion:

Lesser tuberosity of the humerus.



Treating the Subscapularis

Even as there are many one-of-a-kind approaches to treating the stomach of the Subscapularis muscle, I discover one particularly effective. But, some customers may additionally most effective be capable of tolerating static pressure instead of actions with this technique, which include with-fiber or skip-fiber strategies.


  • An area the consumer in a supine feature.
  • Stand going via the patron at a stage of the client’s shoulder.
  • In the palm of your no treating hand, cradle the scapula at the same time as using your fingertips to relaxed the vertebral border of the scapula; abduct the scapula.
  • Position the hands of the treating hand in opposition to the stomach of the Subscapularis muscle. Note: some clients may be ticklish, but this is without difficulty triumph over by means of the use of the purchaser’s hand in the course of the remedy. Surely have the customer place their hand at the ticklish area even as you deal with the place among their hands.
  • Drape the client’s arm across their chest (adduction) for you to shorten the muscle.
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