1. Human Chest and Arm Muscles

2. Pectoralis Major
Pectoralis Minor

3. Rotator Cuff Muscles Supraspinatus Infraspinatus Teres minor
Subscapularis
Another shoulder muscle, but not part of the Rotator Cuff:
Teres Major

4. ROTATOR CUFF: Subscapularis Teres minor Supraspinatous Infraspinatous
(Teres major)
Teres minor
ROTATOR CUFF: Subscapularis Teres minor Supraspinatous Infraspinatous
(Biceps brachii)

5. ROTATOR CUFF: Subscapularis Teres minor Supraspinatous Infraspinatous

6. Rotator Cuff Injury Symptoms
Pain and tenderness in your shoulder, especially when reaching overhead, reaching behind your back, lifting, pulling or sleeping on the affected side.
Diagnosis
X-rays
MRI
Ultrasound

7. Causes of Rotator Cuff Injuries
Normal wear and tear.
Poor posture. When you slouch your neck and shoulders forward, the space where the rotator cuff muscles reside can become smaller. This can allow a muscle or tendon to become pinched under your shoulder bones (including your collarbone), especially during overhead activities, such as throwing.
Falling. Using your arm to break a fall or falling on your arm
Lifting or pulling. Lifting an object overhead Likewise, pulling something, such as a high-poundage archery bow, may cause an injury.
Repetitive overhead movement. This occurs often in athletes, especially baseball pitchers, swimmers and tennis players. It's also common among people in the building trades, such as painters and carpenters.

8. Deltoid

9. Deltoid
Biceps brachii

10. Deltoid
Coracobrachialis
Triceps brachii
Biceps brachii

11. Deltoid
Coracobrachialis
Biceps brachii
Brachialis (deep to biceps brachii)

12. Deltoid
Biceps brachii
Triceps brachii

13. Pronator teres
Brachioradialis

14. Extensor digitorum
Extensor carpi radialis
Extensor carpi ulnaris

15. Ext carpi radialis
Ext digitorum Extensor carpi ulnaris

16. Flexor retinaculum
Palmaris longus
Flexor carpi ulnaris
Flexor carpi radialis

17. Flexor carpi ulnaris
Palmaris longus Flexor carpi radialis

18. Extensor pollicis longus
Extensor pollicis brevis
Abductor pollicis longus

19. Pronator teres
Ext pollicis longus Ext pollicis brevis Abd pollicis longus Brachioradialis