Shoulder external rotators muscles

Authors

Affiliations

Nate Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Warning: No 'path' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'origin' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'origin' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'origin' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'insertion' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'insertion' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'insertion' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'innervation' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'innervation' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'innervation' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.
Warning: No 'action' link found for variable 'ref-posterior-deltoid' in YAML data.

Table 1: Glenohumeral External Rotator Muscles

Muscle	Origin	Insertion	Innervation	Action
Infraspinatus	Infraspinous Fossa of Scapula	Greater tubercle of Humerus	Suprascapular n. C4 - C6	GHJ: ER, Stabilization
Posterior deltoid	Scapular spine	Deltoid tuberosity of humerus	Axillary n. C5 - C6	GHJ: Extension, ER, Abduction
Teres minor		Greater tubercle of Humerus	Axillary n. C5 - C6	GHJ: ER, Weak adduction