Superficial Posterior forearm muscles

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Innervation Radial Nerve for ALL posterior forearms

Last updated 4:27 PM on 10/6/26
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4 Terms

1
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<p>Brachioradialis </p>

Brachioradialis

Origin:

  • lateral supracondylar ridge

Insertion:

  • distal end of lateral radius

Actions:

  • flexion at elbow

Innervation:

  • radial nerve


2
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<p>Extensor Carpi Radialis LONGUS &amp; BREVIS</p>

Extensor Carpi Radialis LONGUS & BREVIS

Origin:

  • lateral supracondylar ridge (L)

  • lateral epicondyle of humerus (B)

Insertion:

  • base of 2nd metacarpal (L)

  • base of 3rd metacarpal (B)

Actions:

  • extension & radial deviation at wrist

Innervation:

  • radial nerve


3
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<p>Extensor digitorum &amp; digiti minimi </p>

Extensor digitorum & digiti minimi

Origin:

  • lateral epicondyle of humerus

Insertion:

  • middle - distal phalanges (2-5) (EM)

  • middle - distal phalanges of 5 (EDM)

Actions:

  • extension at wrist, MCP, PIP, DIP joint

Innervation:

  • radial nerve


4
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<p>Extensor Carpi Ulnaris</p>

Extensor Carpi Ulnaris

Origin:

  • lateral epicondyle

  • posterior ulna

Insertion:

  • base of 5th metacarpal

Actions:

  • extension at wrist

  • ulnar deviation

Innervation:

  • radial nerve