TRAPEZIUS

ORIGIN

Upper part: External occipital proturberance, medial third of the superior nuchal line, the ligamentum nuchae, and the spinous process of C7
Medial Part: Spinous processes of T1 to T5
Lower Part: Spinous processes of T6 to T12

INSERTION

Upper Part: Lateral third of the clavicle and the medial aspect of the acromion process of the scapula
Middle Part: Medial edge of the superior surface of the acromion process of the scapula and the superior edge of the scapular spine
Lower Part: Tubercles of the apex of the scapular spine

ACTION

Upper Part: Upward rotation of the scapula, elevation of the scapula
Middle Part:Retraction of the scapula
Lower Part: Upper rotation of the scapula, depression of the scapula

INNERVATION

Spinal Accessory Cranial XI , Ventral Rami C2-C4

PRIMARY JOINT

Thoracic vertebrae

Shoulder girdle

KEY STRENGTH TRAINING EXERCISES

Barbell shrugs

Dumbbell row

NEW STRENGTH TRAINING EXERCISES

Kettlebell sumo high pull

Scapular pull up

COMMON INJURIES