Rotator cuff muscles

Prepared for PBL presentation in 1st year of MBBS. A basic introduction.

1. Rotator Cuff Muscles By: Abdullah Bin Khurram

2. Rotator Cuff Muscles MUSCLE ORIGIN INSERTION NERVE SUPPLY ACTION Supraspinatus Supraspinous fossa of Scapula Superior facet of Greater tubercle of Humerus Suprascapular Nerve (C4, C5, C6) Initiates and assists in adduction of the arm Infraspinatus Infraspinous fossa of scapula Middle tubercle of greater tubercle of humerus Suprascapular Nerve ( C5, C6) Laterally rotates the arm

3. Rotator Cuff Muscles 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 Subscapular fossa of scapula Lesser tubercle of humerus Upper and lower subscapular nerves (C5, C6, C7) Mediallr rotates the arm

4. Teres Minor

5. Subscapularis

6. Supraspinatus

7. Infraspinatus