Forearm Extensor OINA Flashcards
(15 cards)
Extensor Carpi Radialis Longus
O: lateral supra-epicondylar ridge of humerus
I: base of second metacarpal
N: radial N. (C6-7)
A: extends wrist and radially deviates hand
Extensor Carpi Ulnaris
O: lateral epicondyle
I: base of 5th metacarpal
N: deep radial n. (C7-C8)
A: extends wrist and ulnar deviation
Extensor Carpi Radialis Brevis
O: lateral epicondyle
I: base of the 3rd metacarpal
N: deep radial n. (C7-C8)
A: extends and radially deviates hand
Extensor Digitorum Communis
O: lateral epicondyle
I: extensor expansion
N: deep radial n (C7-C8)
A: extends digits 2-5
Extensor Digiti Minimi
O: ulnar side of extensor digitorum
I: extensor expansion of digit 5
N: posterior interosseus n. (C7-C8)
A: extends 5th digit
Abductor Pollicis Longus (APL)
O: posterior surface of mid ulna, radius, and interosseous membrane
I: base of 1st metacarpal
N: posterior interosseous n. (C7-C8)
A: abducts thumb and extends at CMC jt
Extensor Pollicis Brevis (EPB)
O: middle 1/3 os posterior surface of the radius and interosseous membrane
I: base of proximal phalanx of thumb
N: posterior interosseous n. (C7-C8)
A: extends proximal phalanx of thumb and extends CMC joint
Extensor Pollicis Longus (EPL)
O: middle 1/3 posterior surface of ulna and interosseous membrane
I: base of distal phalanx of thumb
N: posterior interosseous n (C7-C8)
A: extends thumb
Extensor Indicis
O: posterior surface of ulna and interosseous membrane
I: extensor digitorum tendon of finger
N: posterior interosseous n. (C7-C8)
A: extends index finger
What extensor tendons are in the 1st dorsal compartment?
APL (abductor pollicis longus) and EPB (extensor pollicis brevis)
What extensor tendons are in the 2nd dorsal compartment?
ECRL and ECRB (extensor carpi radialis longus and brevis
What extensor tendons are in the 3rd dorsal compartment?
EPL (extensor pollicis longus)
What extensor tendons are in the 4thExtensor Indicis and Extensor Communis dorsal compartment?
Extensor Indicis and Extensor Communis
What extensor tendons are in the 5th dorsal compartment?
Extensor Digiti Minimi
What extensor tendons are in the 6th dorsal compartment
Extensor Carpi Ulnaris (ECU)
