Traditionally, the axillary nerve was thought to only supply the deltoid and teres minor.
To restore independent flexion of the index finger could be performed by using the pronator teres or extensor carpi radialis ulnaris tendon muscle units.
This cut is anatomically distinct from the shoulder tender, which lies directly below it and is the teres major.
Hence, restricted external rotation can encourage adaptive shortening and thickening of the internal rotators of the shoulder principally the teres major and subscapularis.
Its upper third consists of a prominent ridge, the crest of the lesser tubercle, which gives insertion to the tendon of the teres major muscle.
Full-thickness tendon tears did not affect the pennation angle of the subscapularis or teres minor muscles.
The intrinsic muscles of the scapula include the muscles of the rotator cuff- the subscapularis, teres minor, supraspinatus, and infraspinatus.
The physician may notice an enlarged pronator teres muscle.
