Rotator Cuff and Scapular Movement Muscle

deltoid

adduction, flexion, extension

(rotator cuff) suprapinatus

abduction

(rotator cuff) infraspinatus

external rotation

(rotator cuff) subscapularis

internal rotation

(rotator cuff) teres minor

external rotation

biceps brachii

forearm supination, elbow flexion

triceps brachii

forearm extension, shoulder extension

brachioradialis

forearm flexion

rhomboids

scapular retraction and elevation

levator scapula

scapular elevation

serratus anterior

scapular stabilization and protraction

sternoclavicular joint

elevation/depression, protraction/retraction, axial rotation

acromioclavicular

gliding and rotation

glenohumeral

flexion/extension, abduction/adduction, internal/external rotation, (circumduction)

scapulothoracic

elevation/depression, protraction/retraction, upward/downward rotation

origin

• stationary bone

• does not typically move during action

• usually the proximal attachment for limbs

insertion

• moveable bone

• usually the distal attachment for limbs