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Flashcards in Hand Deck (66):
1

Name the (2) types of prehension.

Manipulative and Non-manipulative prehension

2

Which type of prehension is more concerned with fine motor skills?

Manipulative prehension - tip-to-tip grip, lateral pinch or palmar pinch

3

The carpal bones articulate with which bones?

The radius and then the metacarpals distal to them

4

How many phalanges in total?

14 phalanges

5

Describe a boxer's fracture?

Fracture of the 5th metacarpal

6

What types of articulations occur at Carpometacarpal joints (CMC)?

Digits 2-5: Gliding
Thumb: Saddle

7

What articulations occur at MCP/MP joints?

Digits 2-5: Condyloid
Thumb: Hinge

8

The DIP, PIP and IP joint of the thumb are all?

Hinge Joints

9

Flexion/Extension of Digits 2-5 can occur at which all joints?

DIP, PIP and MCP/MP

10

ABduction/ADduction of digits 2-5 occur at which joints of the hand?

MCP/MP joints of hand

11

ABduction/ADduction of the thumb occurs at which joint?

CMC joint

12

Flexion/Extension of thumb occurs at which joint?

CMC, MCP and IP joints

13

Opposition of thumb occurs at which joints?

CMC joint

14

What do the collateral ligaments guard against>

Excessive lateral deviation of the MCP and IP joints

15

What do the volar (palmar) ligaments (plates) guard against?

Hyperextension of the joint and aids in centering the long flexor tendons

16

Where do extrinsic hand muscles have their proximal attachments?

Outside of the hand out in the forearm

17

Which type of prehension are extrinsic hand muscle responsible for?

Non-manipulative prehension

18

Intrinsic hand muscles begin and end where?

The hand

19

Proximal attachment of FDS?

Medial epicondyle of humerus (like other wrist flexors)

20

Distal attachment of FDS?

Base of middle phalanx of digits 2-5

21

Action of FDS?

Flexion of digits 2-5 at the PIP joint

22

Innervation of FDS?

Median nerve

23

Proximal attachments of FDP?

Proximal ulna and Interosseous Membrane

24

Distal attachments of FDP?

Base of distal phalanx of digits 2-5

25

Action of FDP?

Flexion of digits 2-5 at the DIP joints

26

Innervation(s) of FDP?

Medial 1/2 - ulnar n.
Lateral 1/2 - Anterior interosseous nerve

27

Proximal attachment of ED?

Lateral epicondyle of humerus

28

Distal attachment of ED?

Extensor expansion

29

Action of ED?

Extension of digits 2-5
at MCP (also IP)

30

Innervation of ED?

Posterior interosseous nerve (branch of Radial nerve)

31

Name (2) other extrinsic digit extensors in addition to ED?

Extensor indicis proprius
Extensor digiti minimi

32

Innervations of EIP and EDM?

Posterior interosseous nerve

33

What structure couples the actions of digits 2-5?

Juncturae Tendinum - lateral connections between ED tendons

34

Which structure is responsible for ED's actions on IP joints?

The extensor expansion

35

Proximal attachment of FPL?

Anterior radius

36

Distal attachment of FPL?

Distal phalanx of thumb

37

Action of FPL?

Flexes IP of thumb

38

Innervation of FPL?

Anterior interosseous nerve

39

Proximal attachment of EPL?

Post. distal ulna

40

Distal attachment of EPL?

base of distal phalanx of thumb

41

Action of EPL?

Extends the IP of thumb

42

Innervation of EPL?

Posterior interosseous nerve

43

Attachments of EPB?

Post. distal radius --> base of proximal phalanx of thumb

44

Actions of EPB?

Extends CMC and MCP joints

45

Innervation of EPB?

Posterior interosseous nerve.

46

Action of ABductor Pollicis Longus?

Abducts thumb at CMC joint

47

Innervation of ABductor Pollicis Longus?

Posterior Interosseous Nerve

48

De Quervain's Tenosynovitis

Inflammation of EPB and APL tendons as they glide over radial styloid process

49

Describe Finklestein's Test?

Hold thumb and perform ulnar deviation of wrist: if pain present then positive for De Quervain's Tenosynovitis

50

Name the muscles included in the thenar musculature?

Opponens pollicis
Flexor Pollicis Brevis
Abductor Pollicis Brevis

51

Innervation of Opponens pollicis?

Recurrent branch of median nerve

52

Innervation of Flexor pollicis brevis?

Recurrent branch of median and ulnar.

53

Innervation of Abductor pollicis brevis?

Recurrent branch of median n.

54

Name the muscles included in the hypothenar musculature?

Abductor digiti minimi
Flexor digiti minimi brevis
Opponens digiti minimi

55

Carpal tunnel syndrome is identifiable because?

Thenar wasting and parasthesias

56

Adductor pollicis action?

Adducts thumb at CMC joint

57

Adductor pollicis innervation?

Ulnar Nerve

58

Lumbricals are special because?

Only muscle to not have any bony attachments
FDP tendons -> Extensor hood

59

Action of lumbricals?

Flex at MP joint but extend DIP/PIP joints

60

Innervation of Lumbricals?

Lumbricals 1/2 - median
Lumbricals 3/4 - Ulnar N.

61

Dorsal Interossei

DAB - do ABduction and Ulnar N. innervation

62

Palmar Interossei

PAD - do ADduction and Ulnar N. innervation

63

Swan Neck Deformity

Volar plates are lax so the PIP joints hyperextend and DIP joints flex

64

Boutonniere Deformit

PIP joint protrudes through central tendon; PIP flexion with DIP extension

65

Mallet Deformity

inability to extend the DIP

66

Tenodesis

phenomenon where extension of the wrist increases distance over which flexors of fingers act