Rotator Cuff

Question 1

Supraspinatus

Answer 1

Origin: Sup. surface of scapula
Insertion: Sup. surface of humerus
Action: Abduction of shoulder

Question 2

Infraspinatus

Answer 2

Origin: Post. surface of scapula
Insertion: Sup. and post. surface of humerus
Action: Adduction and lat. rotation of shoulder

Question 3

Teres Minor

Answer 3

Origin: Lat. border of scapula
Insertion: Sup. and post. surface of humerus
Action: Adduction and lat. rotation of shoulder

Question 4

Subscapularis

Answer 4

Origin: Ant. surface of scapula
Insertion: Sup. ant. surface of humerus
Action: Med. rotation of shoulder