Rotator Cuff Muscles and Deltoid

Question 1

Name the rotator cuff muscles

Answer 1

Supraspinatus
Infraspinatus
Subscapularis
Teres minor

Question 2

Which rotator cuff muscles attach at the greater tuberosity of the humerus?

Answer 2

Supraspinatus
Infraspinatus
Teres minor

Question 3

Which rotator cuff muscles attach at the lesser tuberosity of the humerus?

Answer 3

Subscapularis

Question 4

Supraspinatus function

Answer 4

Stabilisation of the humeral head in the glenoid fossa

First 15 degrees of abduction (then deltoid takes over)

Question 5

Innervation of supraspinatus

Answer 5

Suprascapular nerve

Question 6

Examination of supraspinatus

Answer 6

Jobe’s/empty can test

Question 7

Infraspinatus function

Answer 7

External rotation of the arm

Question 8

Innervation of infraspinatus

Answer 8

Suprascapular nerve

Question 9

Subscapularis function

Answer 9

Internal rotation of the arm

Question 10

Innervation of subscapularis

Answer 10

Subscapular nerve

Question 11

Teres minor function

Answer 11

External rotation of the arm

Question 12

Innervation of teres minor

Answer 12

Axillary nerve

Question 13

Deltoid function

Answer 13

Abducts the arm

Question 14

Innervation of deltoid

Answer 14

Axillary nerve