Origin and Insertion (posterior forearm)

What is the origin for brachioradialis?

proximal 2/3 of the lateral supracondylar ridge
lateral intermuscular septum

What is the insertion for brachioradialis?

styloid process of the radius

What is the origin for extensor carpi radilais longus?

distal 1/3 of the lateral supracondylar ridge
lateral intermuscular septum

What is the insertion for extensor carpi radialis longus?

base of the 2nd MC

What is the origin for extensor carpi radialis brevis?

CET (lateral epicondyle)

What is the insertion for extensor carpi radialis brevis?

Base of the 3rd MC

What is the origin for extensor digitorum?

CET

What is the insertion for extensor digitorum?

base of the middle and distal phalanges 2-5, via the DDE

What is the origin for extensor digiti minimi?

CET

What is the insertion for extensor digiti minimi?

base of the 5th distal phalanx

What is the origin for extensor carpi ulnaris?

Humeral head: CET
ulnar head: posterior border of ulna

What is the insertion for extensor carpi ulnaris?

Base of the 5th MC

What is the origin for supinator?

Humeral head: CET
Ulnar head: supinator fossa

What is the insertion for supiator?

Posterior proximal 1/3 of the radius

What is the origin for abductor pollicis longus?

Posterior middle 1/3 of both the radius and ulna
interosseous membrane

What is the insertion for abductor pollicis longus?

Radial side of the base of the 1st MC

What is the origin for extensor pollicis brevis?

Posterior middle 1/3 of the radius, distal to APL

Interosseous membrane

What is the insertion for extensor pollicis brevis?

Base of 1st phalanx

What is the origin for extensor pollicis longus?

Posterior middle 1/3 of the ulna, distal to APL
Interosseous membrane

What is the insertion for extensor pollicis longus?

Base of 1st distal phalanx

What is the origin for extensor indicis?

Posterior distal surface (1/3) of the ulna

interosseous membrane

What is the insertion for extensor indicis?

Base of 2nd distal phalanx via DDE