Rotator Cuff Muscles

Question 1

Which four muscles make up the rotator cuff?

Answer 1

Subscapularis, Supraspinatus, Infraspinatus and Teres Minor

Question 2

Proximal attachment of subscapularis

Answer 2

Medial 2/3 of costal aspect of scapula

Question 3

Proximal attachment of supraspinatus

Answer 3

Supraspinous fossa of scapula and from fascia overlying the muscle

Question 4

Muscle proximal attachment of infraspinous

Answer 4

Infraspinous fossa of scapula

Question 5

Muscle proximal attachment of teres minor

Answer 5

Upper two thirds of lateral border of scapula

Question 6

Muscle distal attachment of subscapularis

Answer 6

Passes Laterally inserts on lesser tuberosity shoulder joint capsule and front of the upper shaft of humerus.

Question 7

Muscle distal attachment of supraspinatus

Answer 7

Greater tuberosity of humerus

Question 8

muscle distal attachment of infraspinous

Answer 8

Middle facet of greater tuberosity of humerus

Question 9

muscle distal attachment of teres minor

Answer 9

Lesser tuberosity of humerus

Question 10

Subscapularis does what movement at shoulder joint

Answer 10

Adductor and medial rotator of humerus

Question 11

supraspinatus movement at shoulder joint

Answer 11

abduction

Question 12

infraspinous movement at shoulder joint

Answer 12

Lateral rotator of humerus

Question 13

teres minor movement at shoulder joint

Answer 13

Adductor and lateral rotator of humerus

Question 14

Rotator cuff injuries are caused by

Answer 14

repetitive overhead motions