rotator cuff muscles

Question 1

Infraspinatus

Answer 1

PA: infraspinous fossa

DA: middle facet of greater tubercle

A: laterally rotate, stabilizes GH joint

N: suprascapular c5-6a

Question 2

Teres minor

Answer 2

PA: middle lateral border of scapula

DA: inferior facet of greater tubercle on humerus

A: laterally rotate and stabilizes GH joint

N: axillary c5-6

Question 3

Supraspinatus

Answer 3

PA: supraspinous fossa

DA: superior facet of greater tubercle on humerus

A: first 15 degrees of ABD, stabilizes GH joint

N: suprascapular nerve c5-6

Question 4

Subscapularis (anterior)

Answer 4

PA: subscapular fossa

DA: lesser tubercle on humerus

A: medially rotates arm, stabilizes GH joint,
weak ADD of arm

N: upper and lower supra scapular nerves c5-7