Hand and wrist Flashcards Preview

OS 203 Finals > Hand and wrist > Flashcards

Flashcards in Hand and wrist Deck (43):
0

the thumb is redponsible for how much of the hand's function

40%

1

the index/middle is responsible for how much of the hand's function

20%

2

the ring/pinky is responsible for how much of the hand's function?

10%

3

which carpal bone is boat shaped?

scaphoid

4

which carpal bone is moon shaped?

lunate

5

which carpal bone is pyramidal?

triquetrium

6

which carpal bone is a sesamoid bone?

pisiform

7

which carpal bone is last to ossify? (at 12 y.o)

pisiform

8

which is the largest carpal bone, which is also the 1st to ossify? (1-2 y.o)

capitate

9

which carpal bone has a hook?

hamate

10

which carpal bones belong to the proximal row? distal row?

proximal: some lovers try positions
scaphoid, lunate, triquetrium, pisiform,
distal: they can't handle
trapezium, trapezoid, capitate, hamate

11

which finger does not have a middle phalanx?

thumb

12

the radiocarpal joint is made up of

the radius, scaphoid and lunate

13

the mid carpal joint is formed by

the distal and proximal carpal bones

14

how many extrinsic muscles of the hand is present?

19/20 (+palmaris brevis:40% of the time

15

[innervation and action] extensor carpi radialis longus

radial nerve; extends and abducts the hand

16

[innervation and action] extensor carpi radialis brevis

deep branch of radial nerve; extension and abduction of the hand

17

[innervation and action] extensor carpi ulnaris

deep branch of the radial nerve; extension of the hand

18

[innervation and action] extensor digitorum

deep branch of radial nerve; extensor of medial 4 digits

19

[innervation and action] extensor digitorum minimi

posterior interosseus nerve; extends the proximal phalanx of the 5th digit

20

what structures pass through the carpal tunnel?

flexor digitorum superficialis (4 tendons) flexor digitorum profundus (4 tendons) flexor pollicis longus (1tendon) median nerve

21

what holds the carpal tunnel in place?

flexor retinaculum

22

[innervation and action] flexor carpi radialis

median nerve; flexes and abducts hand at wrist

23

[innervation and action] palmaris longus

median nerve; flexes hand and tenses palmar aponeurosis

24

[innervation and action] flexor carpi ulnaris

ulnar; flexes and adducts hand

25

[innervation and action] flexor digitorum superficialis

median nerve; flexes middle 4 digits

26

[innervation and action] flexor digitorum profundus

ulnar, median; flexes phalanges 4,5 (ulnar), 2,3 (median)

27

[innervation] 1st and 2nd lumbricals

median nerve

28

[innervation] 3rd and 4th lumbricals and interossei

ulnar nerve

29

[innervation] abductor pollicis brevis, opponens pollicis brevis

median nerve

30

flexor pollicis brevis superficial head

median nerve

31

[innervation] flexor pollicis brevis deep head; adductor pollicis

ulnar nerve

33

tinel's test

tap the median neve along its course in the wrist

positive: tingling sensation

34

Phalen's test

position dorsal side of hands against each other

positive: parasthesia, hyposthesia, pain

35

Which annular ligaments prevent bowstringing of tendon?

A2-A4

36

boundaries of the anatomical snuff box

medial:extensor pollicis longus
lateral:abductor pollicis longus and extensor pollicis brevis

37

which nerve can be found in the anatomical snuff box?

radial nerve

38

De Quervaine's tendosynovitis Syndrome

inflammation of the tendons of the extensor pollicis brevis

39

Finkelstein's test

fist made with the thumb and wrist ulnary deviated, stretching the tendons over the radial styloid causing significant pain

40

tennis elbow

inflammation of the origin of the extensor muscles of the forearm

41

golfer's elbow

small tear or inflammation in the origin of the flexor muscles of the forearm

42

cubital tunnel syndrome

compression of the ulnar nerve at the cubital tunnel

54

symptoms of carpal tunnel syndrome

pain, loss of sensation, parasthesia