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MSK > The Hand > Flashcards

The Hand Flashcards

1
Q

What is the action of the opponens pollicus?

A

Opposes the thumb

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2
Q

What is the orginin aand insertion of the opponens pollicus?

A

Originin;tubercle of trapezium, insertion, the lateral margin of the metacarpal of the thumb.

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3
Q

What is the action of the abductor pollicus brevis?

A

Abducts the thumb

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4
Q

What is the origin and insertion of the abductor Pollicus Brevis?

A

Orginin, tubercules of the scaphoid and trapezium, insertion, …….

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5
Q

What is the action of the flexor pollicus brevis?

A

Flexes MCP joint of the thumb

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6
Q

What is the origin and insertion of the flexor pollicus brevis?

A

Origin+tubercules of trapezium and insertion base of the proximal phalengeal joint of thumb

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7
Q

What is the action of the adductor pollcius oblique?

A

Adduction of the cearpometocarapl join of the thumb.

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8
Q

What is the orgin and insertion of the adductor Polllicus Oblique?

A

Origin= captate bone, bases of 2nd and 3rd metacarpals, insertion is the base of the proximal pharynx of the 1st digit

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9
Q

what is the action of the adductor pollics transverse?

A

Adduction of the crpometacpro joint and flexion.

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10
Q

What is the origin and insertion of the adductor pollciuse transverse?

A

Origin shaft of the palmar surface of the 3rd metacarpal insertion are the bases of the proximal phalynx of the 1st digit.

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11
Q

What nerve innverates the opponens pollicus, the adductor pollicu Brevis, and the flexor pollicus Brevis?

A

The median nerve

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12
Q

Which muscles in the hand are innervated by the ulnar nerve?

A

Adductor pollicus transverse, the adductor pollicus oblque, Opponens digiti minimi, flexor digit minimi brevis, adductor digit mini, the dorsal interossi, the palmar interossi, and the medial two lumbricals

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13
Q

What is the Orginin and insertion of the Opponens digiti minnmi?

A

Orgin=hook of hamate, insertion= medial margin of metacarpal 5

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14
Q

What are the actions of the opponens digit minim?

A

Rotates metacarpal of little finger towards palm producing opposition

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15
Q

What is the orgin and insertion of the felxor digiti minimi brevis=

A

Orgin= hook of hamate, insertion, base of the proximal phlaynx

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16
Q

What are the muscles found in the thenar emience?

A

The opponents pollicus, the Adductor pollicis brevis, the flexor pollicus brevis (and possibly the adductor pollicus oblique and the adductor pollicus transverse)

17
Q

What are the actions of the flexor digit mininmi brevis?

A

Flexes the MCP joint of the little finger

18
Q

What is the orgin and insertion of the abductor digiti minimi?

A

Origin= pisiform and the tendon of the flexor carpi ulnaris, and the insertion is the proximal phalynx of the little finger

19
Q

What are the origins and insertions of the lumbricals?

A

Tendon of flexor digitorum profundus, insertions are the extensor hoods

20
Q

How are the lumbricals innervated?/

A

Medial two lumbricals= ulnar nerve, whereas the lateral two lumbircals are innervated by the median nerve

21
Q

What is the actions of the lumbircals?

A

Tney flex at the MCP joint and extend at the IP joints

22
Q

What are the origin and insertions of the dorsal interossei?

A

Origin= lateral and medial surfaces of the metacarpals, and insert into the extensor hood of the proximal phaylnx

23
Q

What are the actions of the dorsal interossei?

A

Abduct fingers at the MCP joint

24
Q

What are the actions of the palmar interossi?

A

adduct the fingers at the MCP joint

25
Q

What are the orgins and insertions of the palmar interossei?

A

Orignin is the medial or lateral surface of the metacarals, and inserts into the exxtensor hood or the proximal phalynx

26
Q

What are the main structures involved in the blood supply to the hand?

A

The radial atery and the ulnar artery, the superficial palmar arch and the deep palmar arch and the common digital arteries

27
Q

What are the three nerves involved in innervating the hand?

A

The ulnar nerve, the median nerve and the superficial branch of the radial nerve

28
Q

What muscles are paralysed in hand of benediction?

A

The lateral two lumbricals meaning that you cannot flex at the MCPs

29
Q

What causes carpal tunnel syndrome?

A

Compression of the median nerve as it runs through the carpal tunnel

30
Q

What are the contents of the carpal tunnel?

A

4 tendons of the flexorr digitorm profundus, 4 tendons of the flexor digitorum superificalis, and the tendon of the flexor Pollicus longus. The median nerve also rund through the carpal tunnel

31
Q

What muscles of the hand are paralysed by a ulnar nerve injury?

A

The interossi are paralysedm and movement of the little finfer are reduced.

32
Q

What is a condition caused by prolonged ulnar nerve injury?

A

Ulnar claw

MSK (5 decks)

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