Action of Upper Limb’s Muscles

at 3 Main Joints [Shoulder, Elbow & Wrist]

	Shoulder	Elbow	Wrist
Flexion	1. Pectoralis Major (Clavicular Head) 2. Deltoid (Anterior Fiber) 3. Coracobrachialis	1. Biceps Brachii 2. Brachialis 3. Brachioradialis	1. Flexor Carpi Radialis 2. Flexor Carpi Ulnaris 3. Palmaris Longus
Extension	1. Teres Major 2. Deltoid (Posterior Fiber) 3. Latissimus Dorsi	1. Triceps 2. Anconeus	1. Extensor Carpi Radialis Longus 2. Extensor Carpi Radialis Brevis 3. Extensor Carpi Ulnaris
ABduction	1. Supraspinatus [0-18] 2. Deltoid (Mid Fiber) [18-90] 3. Serraatus Anterior [90>]	-	1. Extensor Carpi Radialis Longus 2. Extensor Carpi Radialis Brevis 3. Flexor Carpi Radialis
ADduction	1. Teres Major 2. Pectoralis Major 3. Latissimus Dorsi	-	1. Flexor Carpi Ulnaris 2. Extensor Carpi Ulnaris
Medial Rotation	1. Teres Major 2. Pectoralis Major 3. Latissimus Dorsi 4. Subscapularis 5. Deltoid (Anterior Fiber)	-	-
Lateral Rotation	1. Teres Minor 2. Infraspinatus 3. Deltoid (Posterior Fiber)	-	-

at Superior-Inferior Radioulnar Joint

Pronation	Supination
1. Pronator Teres 2. Pronator Quadratus	1. Supinator 2. Biceps

Others

Protraction		1. Pectoralis Minor 2. Serratus Anterior
Retraction		1. Rhomboidus Minor 2. Rhomboidus Major 3. Trapezius (Middle Fiber)
Rotation	Glenoid cav. faces downwards	1. Rhomboidus Minor 2. Rhomboidus Major
	Glenoid cav. faces upwards	1. Trapezius (Upper & Lower Fibers)
Elavation	Scapula	1. Levator Scapulae
	Shoulder	1. Trapezius
Depression	Shoulder	1. Pectoralis Minor
	Scapula	1. Trapezius
Fix or Steadies		1. Subclavius [Clavicle] 2. Serratus Anterior [Scapula] 3. Palmaris Longus [Tensor of Aponeurosis] 4. Triceps [Shoulder Joint] 5. Biceps [Shoulder Joint]