Rotator Cuff OINA

Question 1

Supraspinatus

Answer 1

O: supraspinous fossa

I: greater tubercle of humerus

N: suprascapular

A: abducts arms (reach back of head)

Question 2

Infraspinatus

Answer 2

O: infraspinous fossa

I: greater tubercle of humerus

N: suprascapular

A: extends and laterally rotates arm

Question 3

Teres Minor

Answer 3

O: middle 1/3 of lateral border of scapula

I: greater tubercle of humerus

N: axillary

A: adducts and extends and laterally rotates arm

Question 4

Subscapularis

Answer 4

O: subscapular fossa

I: lesser tubercle of humerus

N: subscapular (upper and lower)

A: rotates arm medially (toward belly)

Question 5

Latissimus Dorsi

Answer 5

O: spinous process of T7-T12, L1-5, median ridge of sacrum and iliac crest

I: crest of lesser tubercle of humerus

N: thoracodorsal

A: adduct, extend, medially rotate arm

Question 6

Teres Major

Answer 6

O: inferior 1/3 of lateral border of scapula

I: crest of lesser tubercle of humerus

N: lower subscapular

A: adducts, extends, medially rotates arm

Question 7

Deltoid

Answer 7

O: lateral clavicle, acromion process, spine of scapula

I: deltoid tuberosity

N: axillary

A: abduct, flex, extend, rotate arm

Question 8

Coracobrachialis

Answer 8

O: coracoid process

I: mid medial border of humerus

N: musculocutaneous

A: adducts and flexes arm