Subscapularis

Subscapularis muscle

Subscapularis muscle

Teres Minor Tendon

Teres Minor Tendon

Muscle Origin

Subscapular fossa of scapula to lesser tubercle of the humerus.

The front of the scapula has a broad concavity called the subscapular fossa.

Insertion

Lesser tubercle of humerus.

The lesser tubercle of the humerus, although smaller, is more prominent than the greater tubercle: it is situated in front, and is directed medially and anteriorly. Above and in front it presents an impression for the insertion of the tendon of the Subscapularis. Wiki

Action

Medially rotates arm at shoulder.

Internally rotates humerus; Assists with depression of the humeral head.

Innervation – Nerve control

Upper subscapular nerve, lower subscapular nerve.

Innervation to subscapularis is supplied by the upper and lower subscapular nerves, branches of the posterior cord of the brachial plexus. (C5-C7) Wiki

Artery

Subscapular artery.

The subscapular artery, the largest branch of the axillary artery, arises at the lower border of the Subscapularis muscle, which it follows to the inferior angle of the scapula, where it anastomoses with the lateral thoracic and intercostal arteries, and with the descending branch of the dorsal scapular artery (aka deep branch of the transverse cervical artery if it arises from the cervical trunk), and ends in the neighboring muscles. Wiki

Antagonist muscles

Infraspinatus, Teres minor.

Pictures of muscles

 

Trigger Point Referrals

 

Stretching description

 

Exercises

 

Injuries

 

Treatment

 

Additional Resources
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