Wrist extensors Flashcards
(31 cards)
Name the wrist extensors
Extensor Carpi Radialis Longus & Brevis, Extensor Carpi Ulnaris, Extensor Digitorum, Extensor Indicis, Extensor Pollicis Longus.
Extensor Carpi Radialis Longus origin
Lower 1/3rd lateral supracondylar ridge of humerous and adjacent intermuscular septum.
Extensor Carpi Radialis Longus insertion
post. surface base of 2nd metacarpal
Extensor Carpi Radialis Longus nerve supply
radial C6, 7
Extensor Carpi Radialis Longus action
wrist extension & radial deviation
Extensor Carpi Radialis Longus function
handstands
Extensor Carpi Radialis Brevis origin
lat. epicondyle of humerus via common extensor tendon
Extensor Carpi Radialis Brevis insertion
post. surface base of 3rd metacarpal
Extensor Carpi Radialis Brevis nerve supply
post. interosseus branch of radial nerve C6, 7
Extensor Carpi Radialis Brevis action
wrist extension & radial deviation
Extensor Carpi Radialis Brevis function
handstands
Extensor Carpi Ulnaris origin
lateral epicondyle of humerus via common extensor tendon via aponeurosis to post. border or ulna
Extensor Carpi Ulnaris insertion
med. side base of 5th metacarpal
Extensor Carpi Ulnaris nerve supply
ulnar C7, 8
Extensor Carpi Ulnaris action
wrist extension and ulnar deviation
Extensor Carpi Ulnaris function
handstands
Extensor Digitorum origin
lat. epicondyle of humerus via common extensor tendon
Extensor Digitorum insertion
dorsal digital expansion to base of post. surface of distal & middle phalanges of fingers
Extensor Digitorum nerve supply
post. interosseus branch of radial nerve C7, 8
Extensor Digitorum action
wrist and phalange extension
Extensor Digitorum function
handstands
Extensor Indicis origin
lower part of post. surface of ulna & interosseus membrane adjacent
Extensor Indicis insertion
index finger digital expansion
Extensor Indicis nerve supply
posterior interosseous branch of radial nerve C7, C8
