Rotator Cuff Muscles Flashcards Preview

Muscle Origins and Insertions > Rotator Cuff Muscles > Flashcards

Flashcards in Rotator Cuff Muscles Deck (4)
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1
Q

Supraspinatus

A

Origin -
Superior to spine of scapula

Insertion -
Greater tuberosity of humerus (superior)

Actions -
Abduction

2
Q

Infraspinatus

A

Origin -
Posterior surface below spine of scapula

Insertion -
Greater tuberosity of humerus (posterior)

Actions -
Horizontal extension of the shoulder
Lateral rotation of the shoulder
Stabilisation of the shoulder

3
Q

Subscapularis

A

Origin -
Anterior surface of scapular

Insertion -
Lesser tuberosity of humerus

Actions - 
Medial rotation of the shoulder
Adduction of the shoulder
Extension of the shoulder
Stabilisation of the shoulder
4
Q

Teres Minor

A

Origin -
Lateral border of the scapula

Insertion -
Greater tuberosity of humerus

Actions -
Lateral roatation
Stabilisation of the shoulder joint