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OS 203 Finals > Hand and wrist > Flashcards

Hand and wrist Flashcards

0
Q

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

A

20%

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1
Q

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

A

40%

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2
Q

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

A

10%

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3
Q

which carpal bone is boat shaped?

A

scaphoid

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4
Q

which carpal bone is moon shaped?

A

lunate

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5
Q

which carpal bone is pyramidal?

A

triquetrium

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6
Q

which carpal bone is a sesamoid bone?

A

pisiform

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7
Q

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

A

pisiform

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8
Q

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

A

capitate

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9
Q

which carpal bone has a hook?

A

hamate

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10
Q

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

A

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

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11
Q

which finger does not have a middle phalanx?

A

thumb

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12
Q

the radiocarpal joint is made up of

A

the radius, scaphoid and lunate

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13
Q

the mid carpal joint is formed by

A

the distal and proximal carpal bones

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14
Q

how many extrinsic muscles of the hand is present?

A

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

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15
Q

[innervation and action] extensor carpi radialis longus

A

radial nerve; extends and abducts the hand

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16
Q

[innervation and action] extensor carpi radialis brevis

A

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

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17
Q

[innervation and action] extensor carpi ulnaris

A

deep branch of the radial nerve; extension of the hand

18
Q

[innervation and action] extensor digitorum

A

deep branch of radial nerve; extensor of medial 4 digits

19
Q

[innervation and action] extensor digitorum minimi

A

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

20
Q

what structures pass through the carpal tunnel?

A

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

21
Q

what holds the carpal tunnel in place?

A

flexor retinaculum

22
Q

[innervation and action] flexor carpi radialis

A

median nerve; flexes and abducts hand at wrist

23
Q

[innervation and action] palmaris longus

A

median nerve; flexes hand and tenses palmar aponeurosis

24
Q

[innervation and action] flexor carpi ulnaris

A

ulnar; flexes and adducts hand

25
Q

[innervation and action] flexor digitorum superficialis

A

median nerve; flexes middle 4 digits

26
Q

[innervation and action] flexor digitorum profundus

A

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

27
Q

[innervation] 1st and 2nd lumbricals

A

median nerve

28
Q

[innervation] 3rd and 4th lumbricals and interossei

A

ulnar nerve

29
Q

[innervation] abductor pollicis brevis, opponens pollicis brevis

A

median nerve

30
Q

flexor pollicis brevis superficial head

A

median nerve

31
Q

[innervation] flexor pollicis brevis deep head; adductor pollicis

A

ulnar nerve

33
Q

tinel’s test

A

tap the median neve along its course in the wrist

positive: tingling sensation

34
Q

Phalen’s test

A

position dorsal side of hands against each other

positive: parasthesia, hyposthesia, pain

35
Q

Which annular ligaments prevent bowstringing of tendon?

A

A2-A4

36
Q

boundaries of the anatomical snuff box

A

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

37
Q

which nerve can be found in the anatomical snuff box?

A

radial nerve

38
Q

De Quervaine’s tendosynovitis Syndrome

A

inflammation of the tendons of the extensor pollicis brevis

39
Q

Finkelstein’s test

A

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

40
Q

tennis elbow

A

inflammation of the origin of the extensor muscles of the forearm

41
Q

golfer’s elbow

A

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

42
Q

cubital tunnel syndrome

A

compression of the ulnar nerve at the cubital tunnel

54
Q

symptoms of carpal tunnel syndrome

A

pain, loss of sensation, parasthesia

OS 203 Finals (9 decks)

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