Forearm Abductors & Adductors

Question 1

Abductor Pollicis Longus: Origin?

Answer 1

Posterior surface of ulna, interosseous membrane

Question 2

Abductor Pollicis Longus: Insertion?

Answer 2

Base of first metacarpal

Question 3

Abductor Pollicis Longus: Nerve?

Answer 3

Radial nerve (C7, C8)

Question 4

Abductor Pollicis Longus: Bony Landmarks & Ligaments?

Answer 4

Posterior surface of ulna, interosseous membrane & Base of first metacarpal

Question 5

Abductor Pollicis Longus: Functional Movement?

Answer 5

Abduction of the thumb

Question 6

Abductor Pollicis Longus: Resisting the muscle?

Answer 6

Stand beside the patient. Place one hand on their thumb and ask them to move their thumb away from the hand against your resistance. Apply gentle pressure to resist the abduction movement.

Question 7

Extensor Pollicis Brevis: Origin?

Answer 7

Posterior surface of radius, interosseous membrane

Question 8

Extensor Pollicis Brevis: Insertion?

Answer 8

Base of proximal phalanx of thumb

Question 9

Extensor Pollicis Brevis: Nerve?

Answer 9

Radial nerve (C7, C8)

Question 10

Extensor Pollicis Brevis: Bony Landmarks & Ligaments?

Answer 10

Posterior surface of radius, interosseous membrane & Base of proximal phalanx of thumb

Question 11

Extensor Pollicis Brevis: Functional Movement?

Answer 11

Extension of the thumb

Question 12

Extensor Pollicis Brevis: Resisting the muscle?

Answer 12

Stand beside the patient. Place one hand on their thumb and ask them to straighten their thumb against your resistance. Apply gentle pressure to resist the extension movement.

Question 13

Flexor Carpi Ulnaris: Origin?

Answer 13

Humeral head: Medial epicondyle of humerus

Ulnar head: Olecranon and posterior border of ulna

Question 14

Flexor Carpi Ulnaris: Insertion?

Answer 14

Pisiform, hook of hamate, base of fifth metacarpal

Question 15

Flexor Carpi Ulnaris: Nerve?

Answer 15

Ulnar nerve (C7, C8, T1)

Question 16

Flexor Carpi Ulnaris: Bony Landmarks & Ligaments?

Answer 16

Medial epicondyle of humerus, olecranon, posterior border of ulna, pisiform, hook of hamate & Base of fifth metacarpal

Question 17

Flexor Carpi Ulnaris: Functional Movement?

Answer 17

Adduction of the wrist

Question 18

Flexor Carpi Ulnaris: Resisting the muscle?

Answer 18

Stand beside the patient. Place one hand on their hand and ask them to bend their wrist inward against your resistance. Apply gentle pressure to resist the movement.