Muscle Testing - Arm & Pectoral Girdle Muscles

Serratus Anterior

Scapular Abduction and Upward Rotation

(130 degrees forward flexion)

Trapezius

Upper Fibres and Levator Scapulae - Scapular Elevation

Middle Fibres and Rhomboid Major - Scapular retraction

Lower Fibres - Scapular Depression and Adduction

Anterior Deltoid

Shoulder Flexion

(Forearm pronated; forward flexion to 90)

Posterior Deltoid

Shoulder Extension

Lateral or Middle Deltoid and Supraspinatus

Shoulder Abduction

Elbow slightly flexed in sitting

Pectoralis Major

Shoulder Adduction

Pectoralis Minor

Stabilises scapula

Protraction of scapula

lnfraspinatus and Teres Minor

Shoulder External Rotation

Subscapularis

Shoulder Internal Rotation

Biceps Brachii

Elbow Flexion in a Supinated Arm

Brachialis

Elbow Flexion or flexion of arm in all positions

Coracobrachialis

Flex and adduct arm resist shoulder dislocation

Triceps Brachii

Elbow Extension