Pictures of Wrist/Hand Flashcards
<p>Abductor Pollicis Longus</p>
<p>O: Upper posterior radius and ulna, interosseous membrane</p>
<p>I: Base of 1st metacarpal and trapezium</p>
<p>A: Extension of thumb, abduction of CMC joint of thumb, radial deviation</p>
<p>Inn: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>Art: Posterior interosseous artery from ulnar artery</p>
<p>Extensor Carpi Ulnaris</p>
<p>O: Lateral epicondyle</p>
<p>I: Base of 5th metacarpal</p>
<p>A: Wrist extension; Ulnar deviation</p>
<p>Inn: Radial Nerve C7-8</p>
<p>Art: Posterior interosseus artery from ulnar artery</p>
<p>Extensor Digiti Minimi</p>
<p>O:Lateral epicondyle</p>
<p>I: Extensor aponeurosis of 5th digit</p>
<p>A: Extension of 5th digit</p>
<p>Inn: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>Art: Posterior interosseous artery from ulnar artery</p>
<p>Extensor Digitorum Communis</p>
<p>O: Lateral epicondyle</p>
<p>I: Base of middle and distal phalanges of digits 2-5 via extensor aponeurosis</p>
<p>A: Wrist extension; Extension of MP joints of digits 2-5</p>
<p>Inn: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>Art: Posterior interosseous artery from ulnar artery</p>
<p>Extensor Carpi Radialis Brevis</p>
<p>O: Lateral epicondyle</p>
<p>I: Base of 3rd metacarpal</p>
<p>A: Wrist extension; Radial deviation</p>
<p>Inn: Deep branch of Radial Nerve C7-8</p>
<p>Art: Radial recurrent artery</p>
<p>Extensor Carpi Radialis Longus</p>
<p>O: Lateral epicondyle; Lateral supracondylar ridge</p>
<p>I: Base of 2nd metacarpal</p>
<p>A: Wrist extension; Radial deviation</p>
<p>Inn: Radial Nerve C6-7</p>
<p>Art: Radial recurrent artery</p>
<p>Flexor Pollicis Longus</p>
<p>O: Anterior radius and interosseous membrane</p>
<p>I: Base of distal phalanx of thumb</p>
<p>A: Flexion of thumb (IP flexion)</p>
<p>Inn: Anterior interosseous brach of Median Nerve C8-T1</p>
<p>Art: Muscular branches from radial artery and anterior interosseous artery from ulnar artery</p>
<p>Flexor Digitorum Profundus</p>
<p>O: Upper ¾ anterior ulnar & interosseous membrane</p>
<p>I: Base of distal phalanges of digits 2-5</p>
<p>A: Flexion of DIP joints; wrist flexion</p>
<p>Inn:Median Nerve digits 2-3, C8-T1;Ulnar Nerve digits 4-5, C8-T1</p>
<p>Art: Muscular branches from radial & ulnar, anterior interosseous artery from ulnar artery</p>
<p>Flexor Digitorum Superficialis</p>
<p>O: Humeroulnar head-Medial epicondyle, ulnar collateral ligament and ulnar coronoid process<br></br>
Radial head- Upper ½ anterior boarder of radius</p>
<p>I: Tendons split and insert on sides of middle phalanx of each digit</p>
<p>A: Flexion of PIP joints of digits 2-5; Wrist flexion</p>
<p>Inn:Median Nerve C8-T1</p>
<p>Art: Muscular branches from ulnar and radial arteries</p>
<p>Flexor Carpi Ulnaris</p>
<p>O: Medial epicondyle</p>
<p>I: Pisiform, Hamate, base of 5th metacarpal</p>
<p>A: Wrist flexion; Ulnar deviation</p>
<p>Inn:Ulnar Nerve C7-8</p>
<p>Art: Muscular branches of Ulnar artery</p>
<p> Palmaris Longus</p>
<p>O: Medial epicondyle</p>
<p>I: Apex of palmer aponeurosis</p>
<p>A: Wrist flexion</p>
<p>Inn: Median Nerve C8-T1</p>
<p>Art: Muscular branches from Ulnar artery</p>
<p>Flexor Carpi Radialis</p>
<p>O: Medial epicondyle</p>
<p>I:Base of 2nd and 3rd metacarpal</p>
<p>A: Wrist flexion; Radial deviation</p>
<p>Inn:Median Nerve C6-7</p>
<p>Art: Muscular branches of Radial artery</p>
<p>Palmar Interossei</p>
<p>O: Base of 2nd, 4th, 5th metacarpals</p>
<p>I: Dorsal extensor expansion of corresponding proximal phalanx</p>
<p>A: Finger adduction</p>
<p>Inn: Ulnar Nerve C8-T1</p>
<p>Art: Deep palmar arch of radial artery</p>
<p>Dorsal Interossei</p>
<p>O: Base of metacarpals; each muscle has 2 heads from adjacent sides of metacarpals</p>
<p>I: Dorsal extensor expansion at base of proximal phalanges; 1st & 2nd on radial side, 3rd&4th on ulnar</p>
<p>A: Finger abduction</p>
<p>Inn: Ulnar Nerve C8-T1</p>
<p>Art: Deep palmar arch of radial artery</p>
<p>Lumbricals</p>
<p>O: Tendons of flexor digitorum profundus</p>
<p>I: Extensor digitorum expansion; each muscle attaches distally to radial side of extensor digitorum</p>
<p>A: MCP flexion of digits 2-5; Extension of IP joints with MCP joints held in extension</p>
<p>Inn:Median C8-T1 2nd & 3rd digits<br></br>
Ulnar C8-T1 4th & 5th</p>
<p>Art: Deep palmar arch of radial artery</p>
<p>Extensor Pollicis Brevis</p>
<p>O: Distal posterior radius and interosseous membrane</p>
<p>I:Base of the proximal phalanx of thumb</p>
<p>A:Extension of MP joint of thumb; Radial deviation</p>
<p>Inn:Posterior interosseous branch of Radial Nerve C7-8</p>
<p>Art: Posterior interosseous artery from ulnar artery</p>
<p>Extensor Pollicis Longus</p>
<p>O: Middle posterior ulna and interosseous membrane</p>
<p>I: Base of distal phalanx of thumb</p>
<p>A: Extension of IP joint, radial deviation</p>
<p>Inn: Posterior interosseous branch of Radial Nerve C7-8</p>
<p>Art:Posterior interosseous artery from ulnar artery</p>
<p>Extensor Indicis</p>
<p>O: Lower posterior ulna and intersosseous membrane</p>
<p>I: Extensor expansion of index finger</p>
<p>A: Extension of index finger</p>
<p>Inn:Posterior interosseous branch of Radial Nerve C7-8</p>
<p>Art: Posterior interosseous artery from ulnar artery</p>
<p>Abductor Pollicis Brevis</p>
<p>O: Tubercle of scaphoid & trapezium, flexor retinaculum & tendons of abductor pollicis longus</p>
<p>I: Base of 1st proximal phalanx, extensor mechanism of thumb</p>
<p>A: Thumb abduction & opposition</p>
<p>Inn: Median Nerve C8-T1</p>
<p>Art: Superficial palmar branches of radial artery</p>
<p>Flexor Pollicis Brevis</p>
<p>O: Across 3 distal carpals (capitate, trapezoid & trapezium), their palmar ligaments & flexor retinaculum</p>
<p>I: Thumb, base of 1st proximal phalanx</p>
<p>A: Flexion of thumb (MSP); opposition</p>
<p>Inn: Median C8-T1;Ulnar C8-T1</p>
<p>Art: Superficial palmar braches of radial artery</p>
<p>Opponens Pollicis</p>
<p>O: Tubercle of trapezium & flexor retinaculum</p>
<p>I: Length of 1st metacarpal; lateral aspect and palmer surface</p>
<p>A: Thumb opposition</p>
<p>Inn: Median Nerve C8-T1</p>
<p>Art: Superficial palmar branches of radial artery</p>
<p>Adductor Pollicis</p>
<p>O: Oblique Head-base of 2nd & 3rd metacarpals, capitate & palmar ligaments of carpals<br></br>
Transverse Head-shaft of 3rd metacarpal on palmer aspect</p>
<p>I: 1st proximal phalanx on ulnar side</p>
<p>A: Thumb adduction</p>
<p>Inn: Ulnar Nerve C8-T1</p>
<p>Art: Superficial palmar branches of radial artery</p>
<p>Abductor Digiti Minimi</p>
<p>O: Pisiform, tendons of flexor carpi ulnaris & pisohamate ligaments</p>
<p>I: Ulnar side of base of 5th proximal phalanx & its dorsal expansion of extensor digiti minimi</p>
<p>A: Abduction of 5th digit</p>
<p>Inn:Ulnar nerve C8-T1</p>
<p>Art: Deep palmar branches of radial artery</p>
<p>Oppenens Digiti Minimi</p>
<p>O: Hook of hamate & flexor retinaculum</p>
<p>I: Length of 5th metacarpal; ulnar aspect & palmar surface</p>
<p>A: Opposition of 5th digit</p>
<p>Inn:Ulnar nerve C8-T1</p>
<p>Art: Deep palmar branches of radial artery</p>
<p>Flexor Digiti Minimi</p>
<p>O: Transverse carpal ligament, hook of hamate</p>
<p>I:Ulnar side of base of proximal phalanx of 5th digit</p>
<p>A: Flexion of 5th digit</p>
<p>Inn: Ulnar Nerve C8-T1</p>
<p>Art: Deep palmar branches of radial artery</p>
