ORIGIN

Long Head: Infraglenoid tubercle of the scapula

Lateral Head: Superior half of the posterior surface of the humeral shaft, lateral to the spiral groove

Medial Head: Posterior shaft of the humerus, medial and distal to the spiral groove (deep to the long and lateral heads of the triceps brachii)

 

INSERTION

Posterior surface of the olcranion process of the ulna

 

ACTION

Extension of the arm at the elbow

 

INNERVATION

Radial nerve (C6,7)

 

PRIMARY JOINT

Elbow joint

Glenohumeral joint

 

KEY STRENGTH TRAINING EXERCISES

Benchpress

Dips

Body up

 

NEW STRENGTH TRAINING EXERCISES

Seated tricep press

Close grip EZ bar press

 

COMMON INJURIES

Strain/stiffness

Stress injury

Overuse

Tennis elbow