Elbow

Question 1

Origin, insertion, action, innervation of supinator?

Answer 1

Lateral epicondyle and proximal ulna
Proximal radius
Supination
Posterior antebrachial interosseous nerve

Question 2

Origin, insertion, action and innervation of triceps brachii?

Answer 2

Medial: posterior surface of humerus below radial groove
Lateral: posterior surface above radial groove
Long: infraglenoid tubercle of scapula
Olecranon process of ulna
Extension of elbow
Radial nerve c7

Question 3

What tendon is most commonly involved with lateral epicondylitis or tennis elbow?
What is its origin, insertion, action and innervation?

Answer 3

Extensor carpi Radialis Brevis
Lateral epicondyle
Dorsal side of third metacarpal 
Extend and abduct the hand 
Deep branch of radial nerve

Question 4

Origin, insertion, action and innervation of extensor carpi radialis longus?

Answer 4

Lateral supracondylar ridge
Dorsal side of second metacarpal
Extend and abduct hand
Radial nerve

Question 5

Origin, insertion, action, innervation of extensor carpi ulnaris?

Answer 5

Lateral epicondyle
Medial side of base of 5th metacarpal
Extend and adduct hand
Posterior antebrachial interosseous nerve

Question 6

Origin, insertion, action and innervation of extensor digit minimi?

Answer 6

Lateral epicondyle
Middle and distal phalanx
Extend little finger
Posterior antebrachial interosseous

Question 7

Origin, insertion, action and innervation of extensor digitorum?

Answer 7

Lateral epicondyle
Dorsal side of middle and distal phalanges of index, middle, ring and little fingers
Extend those same fingers
Posterior antebrachial interosseous

Question 8

Origin, insertion, action and innervation of brachioradialis?

Answer 8

Superior lateral supracondylar ridge of humerus
Lateral distal radius
Flex elbow
Radial nerve

Question 9

What are the 5 main wrist extensor muscles coming from the lateral epicondyle area?

Answer 9

Extensor carpi radialis brevis
Longus
Extensor carpi ulnaris
Extensor digit minimi
Extensor digitorum

Question 10

What are the 3 other extensors at the wrist that don’t cross the elbow?

Answer 10

Extensor indicis
Extensor policis longus
Brevis

Question 11

What are the 4 wrist flexor muscles that also cross the elbow?

Answer 11

Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
Flexor digitorum superficialis

Question 12

What are the two wrist flexors that only cross wrist?

Answer 12

Flexor pollicus longus

Flexor digitorum profundus

Question 13

Two pronator muscles of forearm?

Answer 13

Pronator teres

Pronator Quadratus

Question 14

Origin, insertion, action and innervation of flexor carpi radialis?

Answer 14

Medial epicondyle
Second and third metacarpal
Flex and abduct hand
Median nerve

Question 15

Origin, insertion, action and innervation of flexor digitorum superficialis?

Answer 15

Medial epicondyle
Palmar side of middle phalanx of index, middle, ring and little finger
Flex those fingers
Median nerve

Question 16

Origin, insertion, action and innervation of flexor carpi ulnaris?

Answer 16

Medial epicondyle
Pisiform and base of fifth metacarpal
Flex and adduct hand
Ulnar nerve

Question 17

Origin, insertion, action and innervation of palmaris longus?

Answer 17

Medial epicondyle
Flexor retinaculum
Flex hand
Median nerve

Question 18

Origin, insertion, action, innervation of pronator teres?

Answer 18

Medial supracondylar ridge
Middle lateral anterior radius
Pronation
Median nerve