sports med - muscles of the hands, wrists, & fingers

AOIs for muscles of the hands, wrists, and fingers; DOES NOT INCLUDE ALL MUSCLES

Flexor digitorum - Action(s)

• Flex second through fifth digits

• Wrist flexion

Flexor digitorum - Origin

• Medial epicondyle of humerus

• UCL (ulnar collateral ligament)

• Coronoid process of ulna

• Proximal shaft of radius

• Interosseous membrane

Flexor digitorum - Insertion

Sides of middle phalanges of second through fifth fingers

Extensor pollicis longus - Action(s)

• Thumb extension

• Wrist abduction

Extensor pollicis longus - Origin

• Posterior surface of ulna

• Interosseous membrane

Extensor pollicis longus - Insertion

Base of distal phalanx of thumb

Flexor pollicis longus - Action(s)

• Thumb flexion

• Assist with wrist flexion

Flexor pollicis longus - Origin

• Anterior surface of radius

• Interosseous membrane

Flexor pollicis longus - Insertion

Base of distal phalanx of thumb

Extensor carpi ulnaris - Action(s)

• Wrist extension

• Wrist adduction

Extensor carpi ulnaris - Origin

Lateral epicondyle of humerus

Extensor carpi ulnaris - Insertion

Base of fifth metacarpal

Extensor digitorum - Action(s)

Extend second through fifth fingers

Extensor digitorum - Origin

Lateral epicondyle of humerus

Extensor digitorum - Insertion

Base of middle and distal phalanges of second through fifth fingers

Extensor carpi radialis longus - Action(s)

• Wrist extension

• Radial abduction

• Assist with elbow flexion

Extensor carpi radialis longus - Origin

Distal one-third of lateral supracondylar ridge of humerus

Extensor carpi radialis longus - Insertion

Base of second metacarpal

Flexor carpi radialis - Action(s)

• Wrist flexion

• Wrist abduction

• Assist with elbow flexion

Flexor carpi radialis - Origin

Medial epicondyle of humerus

Flexor carpi radialis - Insertion

Bases of second and third metacarpals

Palmaris longus - Action(s)

• Tense the palmar fascia

• Wrist flexion

• Assist with elbow flexion

Palmaris longus - Origin

Medial epicondyle of humerus

Palmaris longus - Insertion

• Flexor retinaculum

• Palmar aponeurosis

Flexor carpi ulnaris - Action(s)

• Wrist flexion

• Wrist adduction

• Assist with elbow flexion

Flexor carpi ulnaris - Origin

• Medial epicondyle of humerus

• Posterior surface of proximal two-third of ulna

Flexor carpi ulnaris - Insertion

• Pisiform

• Hook of hamate

• Base of fifth metacarpal

Pronator teres - Action(s)

• Forearm pronation

• Assist with elbow flexion

Pronator teres - Origin

• Medial epicondyle of humerus

• Coronoid process of ulna

Pronator teres - Insertion

Middle lateral surface of radius

Supinator - Action(s)

Forearm supination

Supinator - Origin

• Lateral epicondyle of humerus

• RCL (radial collateral ligament)

• Annular ligament

• Supinator crest of ulna

Supinator - Insertion

Anterior lateral surface of proximal one-third of radial shaft

Abductor pollicis longus - Action(s)

• Thumb extension

• Thumb abduction

• Wrist abduction

Abductor pollicis longus - Origin

• Posterior surface of radius

• Posterior surface of ulna

• Interosseous membrane

Abductor pollicis longus - Insertion

Base of first metacarpal