Posterior Forearm (Extensor-Supinator, Superficial Layer)

Question 1

How many muscles are in the superficial posterior forearm group?

Answer 1

6

Question 2

Name the 6 muscles of the superficial posterior forearm group?
***hint
B - ECRL - ECRB - ED - EDM - ECU

Answer 2

BRACHIORADIALIS
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EXTENSOR CARPI RADIALIS LONGUS
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EXTENSOR CARPI RADIALIS BREVIS
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EXTENSOR DIGITORUM
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EXTENSOR DIGITI MINIMI
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EXTENSOR CARPI ULNARIS

Question 3

Brachioradialis attaches at the lateral distal radius (styloid process) inferiorly; where does it attach superiorly?

Answer 3

LATERAL SUPRACONDYLAR RIDGE OF HUMERUS

PROXIMAL PART

Question 4

Brachioradialis is the prime mover for _________ flexion when forearm neutral.

Answer 4

ELBOW

Question 5

Common extensor tendinitis is also known as what?

Answer 5

TENNIS ELBOW

Question 6

The extensor tendons (protected by a sheath) pass under the ___________ ____________.

Answer 6

EXTENSOR RETINACULUM

Question 7

Name the muscle which attaches at the distal part of the supracondylar ridge of the humerus, and inferiorly into the base of the 2nd metacarpal?

Answer 7

EXTENSOR CARPI RADIALIS LONGUS

Question 8

Name the 4 muscles of the superficial posterior forearm which attach at the common proximal tendinous attachment; The Common Extensor Tendon.
(CET attaches at lateral epicondyle of humerus)

Answer 8

EXTENSOR CARPI RADIALIS BREVIS
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EXTENSOR DIGITORUM
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EXTENSOR DIGITI MINIMI
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EXTENSOR CARPI ULNARIS

Question 9

Where does the common extensor tendon attach?

Answer 9

LATERAL EPICONDYLE OF HUMERUS

Question 10

Which superficial posterior forearm muscle attaches distally at the base of the 3rd metacarpal?

Answer 10

EXTENSOR CARPI RADIALIS BREVIS

Question 11

Which superficial posterior forearm muscle attaches distally at the distal phalanges of the medial 4 digits?

Answer 11

EXTENSOR DIGITORUM

Question 12

Which superficial posterior forearm muscle attaches distally at the extensor expansion of the 5th digit?

Answer 12

EXTENSOR DIGITI MINIMI

Question 13

Which superficial posterior forearm muscle attaches distally at the base of the 5th metacarpal?

Answer 13

EXTENSOR CARPI ULNARIS

Question 14

Name the 4 muscles of the superficial posterior forearm which are responsible for the action of radiocarpal extension?

Answer 14

EXTENSOR CARPI RADIALIS LONGUS
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EXTENSOR CARPI RADIALIS BREVIS
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EXTENSOR DIGITORUM
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EXTENSOR CARPI ULNARIS

Question 15

Which action is performed by extensor digiti minimi, the muscle which only controls the 5th digit?

Answer 15

5TH DIGIT EXTENSION

Question 16

Name the muscle responsible for ulnar deviation (together with FCU)?

Answer 16

EXTENSOR CARPI ULNARIS

Question 17

Name the muscles of the “Wad of Three”, which are fascially connected and can be clinically released?

Answer 17

BRACHIORADIALIS
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EXTENSOR CARPI RADIALIS LONGUS
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EXTENSOR CARPI RADIALIS BREVIS