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Upper Limb > Wrist and Hand > Flashcards

Wrist and Hand Flashcards

1
Q

Proximal attachment of Palmaris Brevis

A

medial border of the palmar aponeurosis

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2
Q

Distal attachment of Palmaris Brevis

A

skin on medial border of hand

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3
Q

Innervation of Palmaris Brevis

A

deep branch of ulnar nerve

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4
Q

Action of Palmaris Brevis

A

Protects ulnar nerve & artery
Wrinkles skin of hypothenar eminence
Deepens hollow of the palm, aiding the palmar grip

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5
Q

Muscle(s) of Thenar compartment

A

innervated by the recurrent branch of the median nerve

Abductor Pollicis Brevis, Flexor Pollicis Brevis, Opponens Pollicis

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6
Q

Proximal attachment of Abductor Pollicis Brevis

A

flexor retinaculum & tubercles of scaphoid & trapezium

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7
Q

Distal attachment of Abductor Pollicis Brevis

A

lateral aspect of the base of the proximal phalanx of thumb

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8
Q

Innervation of Abductor Pollicis Brevis

A

recurrent branch of the median nerve

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9
Q

Action of Abductor Pollicis Brevis

A

abduct thumb at carpometacarpal joint & assist in opposition

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10
Q

Proximal attachment of Flexor Pollicis Brevis

A

flexor retinaculum & tubercles of scaphoid & trapezium

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11
Q

Distal attachment of Flexor Pollicis Brevis

A

lateral aspect of the base of the proximal phalanx of thumb

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12
Q

Innervation of Flexor Pollicis Brevis

A

recurrent branch of the median nerve

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13
Q

Action of Flexor Pollicis Brevis

A

flex thumb at carpometacarpal & metacarpalpharangeal joint & assist in opposition

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14
Q

Proximal attachment of Opponens Pollicis

A

flexor retinaculum & tubercles of scaphoid & trapezium

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15
Q

Distal attachment of Opponens Pollicis

A

lateral side of 1st metacarpal (thumb)

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16
Q

Innervation of Opponens Pollicis

A

recurrent branch of the median nerve

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17
Q

Action of Opponens Pollicis

A

oppose thumb at carpometacarpal joint

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18
Q

Muscle(s) of Adductor compartment

A

innervated by deep branch of ulnar nerve

Adductor Pollicis

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19
Q

Proximal attachment of Adductor Pollicis

A

capitate, base of 2nd & 3rd metacarpals, shaft of 3rd metacarpal

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20
Q

Distal attachment of Adductor Pollicis

A

medial side of base of proximal phalanx of thumb

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21
Q

Innervation of Adductor Pollicis

A

deep branch of ulnar nerve

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22
Q

Action of Adductor Pollicis

A

adducts thumb

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23
Q

Muscle(s) of Hypothenar compartment

A

innervated by the deep branch of the ulnar nerve

Abductor Digiti Minimi, Flexor Digiti Minimi, Opponens Digiti Minimi

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24
Q

Proximal attachment of Abductor Digiti Minimi

A

Pisiform

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25
Q

Distal attachment of Abductor Digiti Minimi

A

Medial side of base of proximal phalanx of 5th digit

26
Q

Innervation of Abductor of Digiti Minimi

A

deep branch of ulnar nerve

27
Q

Action of Abbductor Digiti Minimi

A

Abducts 5th digit at metacarpalpharangeal joint

28
Q

Proximal attachment of Flexor Digiti Minimi

A

Hamate

29
Q

Distal attachment of Flexor Digiti Minimi

A

Medial side of base of proximal phalanx of 5th digit

30
Q

Innervation of Flexor Digiti Minimi

A

deep branch of ulnar nerve

31
Q

Action of Flexor Digiti Minimi

A

Flexes proximal phalanx of 5th digit at metacarpalpharangeal joint

32
Q

Proximal attachment of Opponens Digiti Minimi

A

Hamate

33
Q

Distal attachment of Opponens Digiti Minimi

A

Medial border of 5th metacarpal

34
Q

Innervation of Opponens Digiti Minimi

A

deep branch of ulnar nerve

35
Q

Action of Opponens Digiti Minimi

A

Opposes 5th digit at carpometacarpal joint

36
Q

Muscle(s) of Central compartment

A

Lumbricals

1st & 2nd lumbricals innervated by median nerve
3rd & 4th lumbricals innervated by ulnar nerve

37
Q

Proximal attachment of Lumbricals

A

Flexor digitorum profundas tendons

38
Q

Distal attachment of Lumbricals

A

Lateral aspect of Extensor Expansions of 2nd-5th digits

39
Q

Innervation of Lumbricals

A

1st & 2nd lumbricals innervated by median nerve

3rd & 4th lumbricals innervated by ulnar nerve

40
Q

Action of Lumbricals

A

Flex digits at metacarpophalangeal joint & extend digits at interphalangeal joint

41
Q

Muscle(s) of Interosseous compartment

A

innervated by deep branch of ulnar nerve

Palmar Interossei & Dorsal Interossei

42
Q

Proximal attachment of Palmar Interossei

A

Palmar aspect of 2nd, 4th, & 5th metacarpal

43
Q

Distal attachment of Palmar Interossei

A

Base of proximal phalanges & extensor expansions of 2nd, 4th, and 5th digits

44
Q

Innervation of Palmar Interossei

A

Deep branch of ulnar nerve

45
Q

Action of Palmar Interossei

A

ADduction digits to axial line (retract spread fingers) & can assist lumbricals in flexion at metacarpophalangeal joints & extension in interphalangeal joints

46
Q

Proximal attachment of Dorsal Interossei

A

adjacent sides of 2 metacarpals

47
Q

Distal attachment of Dorsal Interossei

A

Bases of proximal phalanges & extensor expansions of 2nd, 4th, & 5th digits

48
Q

Innervation of Dorsal Interossei

A

Deep branch of ulnar nerve

49
Q

Action of Dorsal Interossei

A

ABduct digits from axial line (spread fingers) & can assist lumbricals in flexion at metacarpophalangeal joints & extension at interphalangeal joints

50
Q

___________ is the main contributor of the superficial palmar arch.

A

Ulnar artery

51
Q

___________ is the main contributor of deep palmar arch.

A

Radial artery

52
Q

Importance of Allen test

A

Used to check arterial anastomoses because occasionally do not get interconnection

Means of checking if ULNAR ARTERY provides adequate circulation to the hand

53
Q

Recurrent Branch of Median Nerve

A

Main motor branch of median nerve in hand
Branches off distal to flexor retinaculum, enters thenar muscles
Branches AFTER carpal tunnes, so WILL have problems moving thumb with carpal tunnel syndrome
Innervates: Opponens Pollicis, Abductor Pollicis Brevis, Felxor Pollicis Brevis
Supplies sensation to thumb-half of palmar aspect

54
Q

Lateral Branch of Median Nerve

A

MOTOR and SENSORY

Arises as median nerve enter palm

Runs laterally to palmar thumb and radial side of 2nd finger

Innervates 1st lumbrical, skin of thumb and radial half of second finger

Divides into two common and three proper digital nerves

55
Q

Medial Branch of Median Nerve

A

MOTOR and SENSORY

Arises as median nerve enter palm of hand

Runs medially to adjacent sides of fingers 2-4

Innervates 2nd lumbricals and skin of fingers 2-4

Divides into two common palmar digital nerves which each divide into two proper digital nerves

56
Q

Palmar Cutaneous Branch of Median Nerve

A

SENSORY

Arises proximal to flexor retinaculum - comes off BEFORE, carpal tunnel so not affected in carpal tunnel syndrome

Runs between tendons of palmaris longus and lexor carpi radialis, superficial to flexor retinaculum

Innervated skin of central palm

57
Q

Palmar Cutaneous Branch of Ulnar Nerve

A

Proximal to flexor retinaculum

Innervates skin at base of palm, over medial carpals

58
Q

Dorsal Cutaneous Branch of Ulnar Nerve

A

Proximal to flexor retinaculum

Supplies medial aspect of back of hand, including 5th and half of the 4th digit

59
Q

Superficial Branch of Ulnar Nerve

A

Arises at wrist between pisiform and hamate bones

Divides into two common palmar digital nerves

Innervates palmaris brevis and helps give sensation to 5th and half of 4th digit and ulnar side of palm

60
Q

Deep Branch of Ulnar Nerve

A

MOTOR nerve (to everything except LOAF)

Arises at wrist between pisiform and hamate bones

Innervates hypothenar muscles (Abductor, flexor, and opponens digiti minimi), 4th and 5th lumbricals, all interossei, adductor pollicis, and HALF of Flexor pollicis brevis)

61
Q

Superficial Branch of Redial Nerve

A

SENSORY (common dorsal digital nn; proper dorsal digital nn)

Arises from radial nerve in cubial fossa

Supplies skin of half of dorsal hand and thumb, digits 2, 3, and half of 4

Upper Limb (2 decks)

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