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Flashcards in Roator Cuff Muscles Deck (12):
1

What is the origin of the supraspinatus ?

Superior to the spine of the scapula

2

What is the insertion of the supraspinatus ?

Superiorly on the head of the humerus

3

What are the joint actions of the supraspinatus ?

Assists in deltoid adduction of the arm

Stabilises the shoulder joint helping prevent downward dislocation

4

What is the origin of the subscapularis ?

Anterior surface of the scapula

5

What is the insertion of the subscapularis ?

Anteriorly on the head of humerus

6

What are the joint actions of the subscapularis ?

Rotates the arm medically
Stabilises the joint

7

What is the origin of the infraspinatus ?

Inferior to the spine of the scapula

8

What is the insertion of the infraspinatus ?

Laterally on the head of the humerus

9

What are the joint actions of the infraspinatus ?

Rotates the arm laterally

Stabilises the joint

10

What is the origin of the teres minor ?

Lateral border of the scapula near the inferior angle

11

What is the insertion of the teres minor ?

Laterally on the head of the humerus

12

What are the joint actions of the teres minor ?

Rotates the arm laterally

Stabilises the joint