Rotator Cuff Muscles.pptx

Rotator cuff muscles

1. Dr Naveed Khalid Rotator Cuff Muscles

2. SItS

3. Supraspinatus : originates above the spine of the shoulder blade from supraspinatus fossa inserts on the greater tuberosity of the humerus . Innervation : Suprascapular nerve

4. Infraspinatus originates below the spine of the scapula, in the infraspinatus fossa , inserts on the posterior aspect of the greater tuberosity of the humerus . Innervation : Suprascapular nerve

5. Teres minor  originates on the lateral   border of scapula inserts on the greater tuberosity of the humerus . Innervation : Axillary nerve

6. Subscapularis originates on the anterior surface of the scapula from subscapularis fossa inserts on the lesser tuberosity of the humerus Innervation : Upper and lower subscapular nerves

7. Function Each rotator cuff muscle performs a specific and important function for your shoulder joint

8. Stabilizing the head of the humerus in the shoulder joint The   supraspinatus , infraspinatus , teres minor, and subscapularis muscles all work together to achieve this

9. Abducting or elevating the shoulder joint out to the side These motions are performed by the supraspinatus .

10. Externally rotating the shoulder joint The infraspinatus and teres minor muscles are responsible for this movement

11. Depressing the head of the humerus The subscapularis muscle performs this additional function to allow the humerus to move freely in the shoulder joint during the elevation of the arm

12. Thank You !