Rotator Cuff Muscles

By: Abdullah Bin Khurram

MUSCLE ORIGIN INSERTION NERVE SUPPLY ACTION

Supraspinatus Supraspinousfossa of Scapula

Superior facet of Greater tubercle of Humerus

SuprascapularNerve (C4, C5,C6)

Initiates and assists in adduction of the arm

Infraspinatus Infraspinousfossa of scapula

Middle tubercle of greater tubercle of humerus

SuprascapularNerve (C5, C6)

Laterally rotates the arm

MUSCLE ORIGIN INSERTION NERVE SUPPLY ACTION

Teres minor Middle part of lateral border of scapula

Inferior facet of greater tubercle of Humerus

Axillary Nerve (C5, C6)

Laterally rotates the arm

Subscapularis Subscapularfossa of scapula

Lesser tubercle of humerus

Upper and lower subscapularnerves (C5, C6, C7)

Mediallr rotates the arm

Teres Minor

Subscapularis

Supraspinatus

Infraspinatus