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LCRS Y2: Anatomy of the limbs > 4. The Hand > Flashcards

4. The Hand Flashcards

1
Q

Recall the key fascious landmarks in the hand

A

Medially: hypothenar fascia
Centrally: PL tendon, palmar aponeurosis
Laterally: Thenar fascia

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2
Q

Which tendons run through each digit, and by what are they secured to the bone?

A

FDS and FDP tendons

Skin (Grayson) ligament

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3
Q

What vessels run within each digit?

A

Proper palmar artery and vein

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4
Q

Recall the 2 main spaces of the hand

A

Thenar and mid-palmar

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5
Q

Name the 4 compartments of the hand

A

Hypothenar
Central
Thenar
Adductor

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6
Q

Recall the 2 main septa of the hand, and their beginning and endpoints

A
  1. Medial fibrous septum: Palmar aponeurosis to 5th metacarpal
  2. Lateral fibrous septum: Palmar aponeurosis to 3rd metacarpal
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7
Q

Recall the thenar muscles

A

Flexor pollicis brevis
Abductor polllicis brevis
Opponens policis

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8
Q

Recall the hypothenar muscles

A

Flexor digiti minimi
Abductor digiti minimi
Opponens digiti minimi

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9
Q

Recall the adductor muscle

A

Adductor pollicis

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10
Q

What muscles are found between the digits, and how many are there of each of these?

A 
Lumbricals (4)
Dorsal interossei (4)
Palmar interossei (3)
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11
Q

Recall the function of the lumbricals and palmar and dorsal interossei

A

Lumbricals: flex metacarpophalangeal joints, extend interphalangeal joints
Palmar interossei: adduction
Dorsal interossei: abduction

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12
Q

Recall the proximal and distal attachments of the lumbricals

A

Proximal: long tendons
Distal: extensor expansion

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13
Q

Recall the muscles involved in abduction of the thumb

A

abductor pollicis longus + brevis

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14
Q

Recall the muscles involved in adduction of the thumb

A

1st DORSAL INTEROSSEOUS

adductor pollicis

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15
Q

Recall the muscles involved in extension of the thumb

A

ABDUCTOR POLLICIS LONGUS

Extensor pollicis longus + brevis

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16
Q

Recall the muscles involved in flexion of the thumb

A

Flexor pollicis longus + brevis

17
Q

Recall the muscle involved in opposition of the thumb

A

Opponens pollicis

18
Q

Where does the ulnar artery enter the wrist?

A

Beside FCU

19
Q

What arteries does the ulnar artery give rise to in the hand?

A

Palmar digital arteries
Deep palmar branch
Princeps pollicis
Radialis indicis

20
Q

Describe the location of the radial artery at the wrist

A

Beneath brachioradialis, beside FCR

21
Q

What arteries does the radial artery give rise to in the hand?

A

Palmar metacarpals

22
Q

Recall the innervations of the medial nerve in the hand

A 
MOTOR: 
Thenar muscles
1st and 2nd lumbricals 
SENSORY:
Palmar surface of thumb
IF, MF and 1/2 of RF
23
Q

Describe the location of the medial nerve at the wrist

A

Between FDS and FDP
Deep to PL
Enters via carpal tunnel

24
Q

Describe the location of the ulnar nerve at the wrist

A

By FCU, runs superior to flexor reticulum, lateral to pisiform

25
Q

Recall the innervations of the ulnar nerve in the hand

A 
MOTOR:
Hypothenar muscles
Adductor pollicis
2nd and 4th lumbricals
All interossei
SENSORY: 
palmar surfaces of LF and other half of RF
26
Q

Recall the innervations of the radial nerve in the hand

A

NO MOTOR INNERVATION
SENSORY:
dorsal aspect of hand

27
Q

Name the ligaents surrounding the digital fibrous sheaths

A

Annular and cruciate

28
Q

What is contained within the common tendinous sheath in each digit?

A

FDS and FDP tendon

29
Q

Recall the paths of the FDS and FDP tendons

A

Enter carpal tunnel beneath FR
Common synovial sheath
Digital synovial sheath

30
Q

What fascia secures tendons on the dorsal aspect of the hand?

A

Extensor reticulum

31
Q

Recall the functions of the carpometacarpal and intermetacarpal joints

A

Flex and extend
Radial and ulnar deviation
Circumduction

32
Q

Recall the functions of the metocarpophalyngeal and interphalyngeal joints

A

Only flex and extend

33
Q

Recall the bony attachments of the carpal tunnel

A

Scaphoid
Hamate
Trapezium
Pisiform

34
Q

Recall the contents of the carpal tunnel

A

Median nerve
FPL tendon
4 tendons of FDP
4 tendons of FDS

35
Q

Recall the 3 modes of grip

A

Power, precision and hook

36
Q

Recall the muscles involved in maintaining a power grip

A

Long flexors
Intrinsic muscles of hand
Extensors of wrist joint

37
Q

Recall the muscles involved in maintaining a precision grip

A

Long flexors AND extensors

Intrinsic hand muscles

38
Q

Recall the muscles involved in maintaining a hook grip

A

Long flexors

LCRS Y2: Anatomy of the limbs (7 decks)

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