FPP - Upper Limb Muscles

Pectoralis Major

Origin:

Anterior border of medial 1/3 of clavicle

Anterior aspect of sternum

Costal cartilages of ribs 1-6 anterior recuts sheath

Insertion:

Lateral lip of intertubercular sulcus

Movement:

Humeral flexion

Humeral adduction

Internal rotation of humerus

Horizontal abduction of the humerus

Latissimus Dorsi

Origin:

Spinous process of T7 - L5

Posterior 1/2 of iliac crest

Ribs 9-12

Inferior angle of scapula

Insertion:

Intertubercular sulcus

Movement:

Humeral extension

Humeral adduction

Internal rotation of humerus

Trapezius

Origin:

External occipital protuberance and superior nuchal line of occipital bone

Nuchal ligament

Spinous processes of C7 - T12

Insertion:

Posterior aspect of lateral 1/3 of clavicle

Acromion

Spine of scapula

Movement:

Upper fibers:

Scapular elevation

Scapular upward rotation (with lower fibers)

Neck extension and lateral flexion (if scapula is fixed)

Middle fibers:

Scapular retraction

Lower Fibers:

Scapular depression

Scapular upward rotation (with upper fibers)

Deltoid

Origin:

Lateral 1/3 of clavicle

Acromion

Spine of scapula

Insertion:

Deltoid tuberosity of humerus

Movement:

Anterior:

Humeral flexion

Humeral internal rotation

Humeral adduction

Middle:

Humeral abduction

Posterior:

Humeral extension

Humeral external rotation

Humeral horizontal abduction

Teres Major

Origin:

Posterior aspect of inferior angle of scapula

Insertion:

Crest of lesser tubercle of humerus

Movement:

Humeral extension

Humeral adduction

Humeral internal rotation

Biceps Brachii

Origin:

Supraglenoid tubercle of scapula

Apex of coracoid process

Insertion:

Radial tuberosity

Movement:

Elbow flexion

Forearm supination

Humeral flexion (long head)

Brachialis

Origin:

Lower half of the anterior aspect of humerus

Insertion:

Ulnar tuberosity

Coronoid process

Movement:

Elbow flexion

Brachioradialis

Origin:

Upper 2/3 of lateral supracondylar ridge

Insertion:

Lateral surface of the distal end of the radius, proximal to styloid process

Movement:

Elbow flexion

Supination

Triceps Brachii

Origin:

Posterior surface of humerus

Infraglenoid tubercle of scapula

Insertion:

Olecranon process of ulna

Movement:

Elbow extension

Shoulder extension (long head)

Humeral adduction

Extension Carpi Radialis Longus

Origin:

Lateral supracondylar ridge of humerus

Insertion:

Base of 2nd metacarpal

Movement:

Extends and radially deviates the wrist

Extension Carpi Radialis Brevis

Origin:

Lateral epicondyle of humerus

Insertion:

Base of 3rd metacarpal

Movement:

Extends Wrist

Radial deviation

Extensor digitorum

Origin:

Lateral epicondyle of humerus

Insertion:

Extensor expansions of digits 2-5

Movement:

Extends digits 2-5 at MCP and IP joints

Assists with wrist extension

Extensor Digiti Minimi

Origin:

Lateral epicondyle of humerus

Insertion:

Extensor expansion of 5th digit

Movement:

Extends little finger

Assists with wrist extension

Extensor Carpi Ulnaris

Origin:

Lateral epicondyle of humerus

Posterior border of ulna

Insertion:

Base of 5th metacarpal

Movement:

Extends wrist

Ulnar deviation

Anconeus

Origin:

Lateral epicondyle of humerus

Insertion:

Lateral olecranon

Proximal posterior ulna

Movement:

Assists elbow extension

Supinator

Origin:

Lateral epicondyle of humerus

Radial collateral ligament

Annular ligament

Supinator crest of ulna

Insertion:

Proximal third of radius

Movement:

Supinates forearm

Pronator Teres

Origin:

Medial epicondyle of humerus

Coronoid process of ulna

Insertion:

Middle lateral surface of radius

Movement:

Pronates forearm

Assists elbow flection

Flexor Carpi Radialis

Origin:

Medial epicondyle of humerus

Insertion:

Bases of 2nd and 3rd metacarpals

Movement:

Flexes wrist

Abducts wrist

Palmaris Longus

Origin:

Medial epicondyle of humerus

Insertion:

Flexor retinaculum

Palmar aponeurosis

Movement:

Flexes wrist

Flexor Carpi Ulnaris

Origin:

Medial epicondyle of humerus

Olecranon

Posterior border of ulna

Insertion:

Pisiform

Hook of hamate

Base of 5thmetacarpal

Movement:

Flexes wrist

Adducts wrist

Flexor Digitorum Superficialis

Origin:

Medial epicondyle of humerus

Coronoid process of ulna

Anterior radius

Insertion:

Shafts of middle phalanges of digits 2-5

Movement:

Flexes proximal interphalangeal joints

Flexes metacarpophalangeal joints and wrist

Flexor Pollicis Longus

Origin:

Anterior surface of radius

Interosseous membrane

Insertion:

Base of distal phalanx of thumb

Movement:

Flexes interphalangeal joint of thumb

Flexor Digitorum Profundus

Origin:

Proximal 2/3 of anterior and medial ulna

Interosseous membrane

Insertion:

Bases of distal phalanges of digits 2-5

Movement:

Flexes distal interphalangeal joints