ORIGIN

On the dorsal surface of the middle half of the lateral border of the scapula

 

INSERTION

The lowest of the three facets of the greater tubercle of the humerus

 

ACTION

Externally rotates the arm

 

INNERVATION

Axillary nerve (C5,6)

 

PRIMARY JOINT

Glenohumeral joint

 

KEY STRENGTH TRAINING EXERCISES

Barbell pullover

Lat pulldown

 

NEW STRENGTH TRAINING EXERCISES

Neutral grip pull up

Behind the back lat pull down

Reverse grip lat pull down

 

COMMON INJURIES

Strain/stiffness

Tear

Shoulder bursitis