DEEP BACK AND SHOULDER AOI CHART

trapezius action

scapular elevation, upward rotation, scapular retraction, scapular depression

trapezius orgin

occipital bone, spinous processes c7

trapezius insertion

clavicle and scapular spine

rhomboid minor action

retracts and elevates scapula

rhomboid minor orgin

spinous processes c7-t1

rhomboid minor insertion

medial border of scapula

rhomboid major action

retracts and elevates scapula

rhomboid major orgin

spinous processes t2-t5

rhomboid major insertion

medial border of scapula

serratus anterior action

scapular portraction, upward rotation

serratus anterior orgin

lateral surface of upper 8 ribs

serratus anterior insertion

anterior surface of scapula

pectoralis minor action

scapular depression, potraction, downward rotation, tilt

pectoralis minor orgin

anterior surface 3rd-5th ribs

pectoralis minor insertion

scapula

pectoralis major action

shoulder flexion, shoulder extension, first 60deg

pectoralis major orgin

clavicle, sternum, costal cartilage, ribs 1-6

pectoralis major insertion

lateral lip of humerus

deltoid action

shoulder abduction, flexion, medial rotation, horizontal adduction

deltoid orgin

lateral 3rd of scapula and clavicle

deltoid insertion

humerus

latissimus dorsi action

shoulder extension, adduction, medial rotation, hyperextension

latissimus dorsi orgin

spinous procceses of t7-l5, posterior surface of sacrum, iliac crest, lower 3 ribs

latissimus dorsi insertion

medial groove of humerus

infraspinatus action

shoulder lateral rotation, horizontal abduction

infraspinatus orgin

infraspinous fossa of scapula

infraspinatus insertion

greater tubercle of humerus

teres major action

shoulder extension, adduction, medial rotation

terest major orgin

scapula

teres major insertion

medial side of head of humerus