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Y2 MSK Anatomy > Hand > Flashcards

Hand Flashcards

1
Q

List the groups of intrinsic muscles of the hand

A 
Thenar
Hypothenar
Lumbricals
Interossei
Palmaris brevis
Adductor pollicis
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2
Q

List the thenar muscles of the hand

A

Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis

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3
Q

Which movements does opponens pollicis enable?

A

Thumb: flexion at CMJ (opposition)

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4
Q

Which movements does abductor pollicis brevis enable?

A

Thumb: abduction, opposition, extension

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5
Q

Which movements does flexor pollicis brevis enable?

A

Thumb: flexion

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6
Q

What is the main nerve supply to the thenar muscles?

A

Median nerve

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7
Q

List the hypothenar muscles of the hand

A

Opponens digiti minimi
Abductor digiti minimi
Flexor digiti minimi brevis

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8
Q

Which movements does opponens digit minimi enable?

A

Little finger: rotation, opposition

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9
Q

Which movements does abductor digiti minimi enable?

A

Little finger: abduction

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10
Q

Which movements does flexor digiti minimi enable?

A

Little finger: flexion

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11
Q

What is the main nerve supply to the hypothenar muscles?

A

Ulnar nerve

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12
Q

How many lumbrical muscles are in the hand?

A

4 (one for each finger)

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13
Q

What is the nerve supply to the lumbricals?

A 
Median nerve (1-2)
UInar nerve (3-4)
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14
Q

Which movements do the lumbricals enable?

A

MCPJ: flexion
IPJ: extension

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15
Q

How many interossei muscles are in the hand?

A

7

4 dorsal, 3 palmar

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16
Q

What is the nerve supply to the interossei?

A

Ulnar nerve

17
Q

Which movements do the interoessei enable?

A

Dorsal interossei: abduction at MCPJ
Palmar interossei: adduction at MCPJ
(PAd DAb)

18
Q

What is the nerve supply to palmaris brevis?

A

Ulnar nerve

19
Q

Which movements does palmaris brevis enable?

A

Hand: improve grip

20
Q

What is the nerve supply to adductor pollicis?

A

Ulnar nerve

21
Q

Which movements does adductor pollicis enable?

A

Thumb: adduction

22
Q

A useful mnemonic for the thenar + hypothenar hand muscles:

All For One And One For All

A 
HYPOTHENAR:
Abductor digiti minimi
Flexor digiti minimi brevis
Opponense digiti minimi (DEEP)
Adductor pollicis

THENAR:
Opponens pollicis
Flexor pollicis brevis
Abductor pollicis brevis

23
Q

What bone movement occurs in pronation?

A

Radius moves over ulna

24
Q

What type of joint is the radiocarpal joint?

A

Elipsoid joint

25
Q

The radial artery contributes to the deep/superficial palmar arch

A

Deep

26
Q

The ulnar artery contributes to the deep/superficial palmar arch

A

Superficial

27
Q

What is the lymph drainage of the upper limb?

A

Cubital and axillary nodes

28
Q

What is the most common carpal bone fracture? This leads to pain in the…

A

Anatomical snuffbox

29
Q

Carpal tunnel syndrome involves compression of the…

This leads to weakness in which muscles?

A

Median nerve

Thenar muscles

30
Q

Cubital tunnel syndrome involves compression of the…

A

Ulnar nerve

31
Q

What movements do the interrosei enable?

A

Dorsal abduct digits (DAB)

Palmar adduct digits (PAD)

32
Q

What intrinsic hand muscles does the median nerve supply?

A 
LOAF
Lateral 2 lumbricals
Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis
(All rest are ulnar)
33
Q

Dupuytren’s contracture involves thickening of the…

A

Palmar fascia

34
Q

What is the function of the flexor tendon sheaths?

A

Reduce friction in tendons via synovial covering

35
Q

What is trigger finger? How is it tested for?

A

Nodule rubs on A1 pully

Patient can’t make fist (cant fully extend digits)

36
Q

Boutinniere deformity involves what movement at the PIP and DIP joints, respectively?

A

Flexion

Hyperextension

37
Q

Swan neck deformity involves what movement at the PIP and DIP joints, respectively?

A

Hyperextension

Flexion

Y2 MSK Anatomy (10 decks)

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