Anatomy of the Hand and Wrist Flashcards
Where does the abductor policis brevis originate and insert, and what does it do?
Palmer scaphoid/trapezium
Lateral proximal phalanx base on thumb
Abducts thumb
Where does the extensor policis brevis originate, insert and what does it do?
Posterior radius halfway down
Dorsal thumb posterior phalanx
Extends thumb
Where does the extensor policis Longus originate, insert and what does it do?
Halfway down posterior ulna
Dorsal thumb proximal phalanx
Extends thumb
Where does the flexor policis brevis originate, insert and what does it do?
Originates palmar trapezium
Inserts palmer thumb proximal phalanx
Flexes thumb
Where does the flexor policis longus originate, insert and what does it do?
Anterior surface of radius halfway down
Palmer aspect of distal thumb phalanx
Flexes the thumb
Abductor policis Longus?
Posterior aspect of proximal 1/2 ulna+ middle 1/3 radius
Lateral of base of 1st metacarpal
Abducts and extends thumb
Extensor carpi radialis brevis?
Common extensor origin
Dorsal of 3rd metacarpal base
Extends/abducts wrist
Extensor carpi radialis Longus?
Lateral supracondylar ridge of humerus
Dorsal of base of 2nd metacarpal
Extends/abducts wrist
Extensor carpi ulnaris?
Common extensor origin
Medial of base of 5th metacarpal
Extends/adducts hand
Extensor digiti minimi?
Common extensor origin
Posterior surface of little finger
Extends little finger
Extensor digitorum?
Common extensor origin
Dorsal aspect bases of middle/distal phalanges of 2nd-5th fingers
Extends 2nd-5th fingers
Extensor indicis?
Posterior distal 1/3 ulna
Dorsal index finger
Extends index finger
Flexor carpi ulnaris?
Common flexor origin
Pisiform/hook of hamate/Palmer base 5th metacarpal
Flexes/adducts hand at wrist joint
Flexor carpi radialis?
Common flexor origin
Palmar aspects of 2nd/3rd metacarpal bases
Flexes/abducts hand
Flexor digitorum profundus?
Coronoid process
Palmar of base of distal phalanges of 2nd-5th
Flexes 2nd-5th fingers
