ORIGIN

Clavicular Head: Anterior surface of the medial half of the clavicle. Sternal Head: Lateral aspects of the manubrium and body of the sternum, the upper six costal cartilages and the aponeurosis of the abdominal oblique

 

INSERTION

Clavicular Head: Lateral lip of the bicipital groove of the humerus and anterior lip of the deltoid tuberosity
Sternal Head: Lateral lip of the bicipital groove of the humerus and the anterior lip of the deltoid tuberosity

 

ACTION

Shoulder flexion, Internal rotation, Adduction

 

INNERVATION

Medial pectoral nerve (C7, T1) and lateral pectoral nerve (C5, 6, 7)

 

PRIMARY JOINT

Glenohumeral joint

 

KEY STRENGTH TRAINING EXERCISES

Bench press

Close grip push ups

Dumbbell fly

Dips

 

NEW STRENGTH TRAINING EXERCISES

Ball inclined push ups

Cable crossovers

Kettlebell fly

 

COMMON INJURIES

Strain/stiffness

Muscle tear