Wrist Flashcards

0
Q

Name the 8 carpal bones in order

A

Scare lovers try positions that they can’t handle

Scaphoid lunate triquetrum pisiform trapezium trapezoid capitate hamate

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1
Q

Deqervains involves what tendons ?

A

Abductor poll longus

Extensor poll brevis

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2
Q

how many bones are there in the wrist and hand?

A

28 bones

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3
Q

which carpal bones does the radius articulate with?

A

scaphoid and lunate

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4
Q

what is the capsular pattern of the wrist?

A

flexion=extension

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5
Q

what is one of the most important ligaments to maintain carpal stability?

A

radioscapholunate ligament

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6
Q

are palmar or dorsal ligaments stronger.

A

palmar ligaments

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7
Q

where are the intercarpal joints?

A

between the individual bones of the proximal row of carpals and the joints between the individual bones of the distal row

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8
Q

where is the midcarpal joint?

A

between the proximal and distal rows of carpal bones

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9
Q

what forms the proximal transverse arch?

A

distal row of carpal bones

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10
Q

what forms the distal transverse arch?

A

passes through the metacarpophalangeal joints

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11
Q

what is the keystone to both the distal transverse arch and the distal longitudinal arch?

A

second and third metacarpophalangeal joints

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12
Q

what is a hand deformity caused by a median nerve injury?

A

ape hand deformity

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13
Q

what is a hand deformity caused by a ulnar nerve injury?

A

bishops hand or benediction hand deformity, and claw fingers

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14
Q

what is a hand deformity caused by a radial nerve injury?

A

drop wrist deformity

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15
Q

where is the dupuytren contracture usually seen?

A

in the ring or little finger

16
Q

what is a boutonnière deformity?

A

extension of the DIP and the metacarpophalangeal joint and flexion of the PIP

17
Q

what is a swan neck deformity?

A

flexion of the DIP and the metacarpophalangeal joint and extension of PIP

18
Q

what disease is “pill rolling hand” seen on?

A

parkinson disease

19
Q

what is “opera glove anesthesia” seen in?

A

hysteria, leprosy, and diabetes

20
Q

during wrist flexion where does most movement occur.

A

in the midcarpal joint

21
Q

where does ulna deviation primarily occur?

A

at the radiocarpal joint

22
Q

where does radial deviation primarily occur?

A

between the proximal and distal row of carpal bones

23
Q

is the thumb always involved with power grip or precision grip

A

precision grip

24
Q

what are the four different types of power grips?

A

hook grasp, cylinder grasp, spherical grasp, and fist grasp

25
Q

are intrinsic muscle more important in power or precision grips.

A

precision

26
Q

what are the three types of precision grips?

A

three-point chuck(three fingered, or digital prehension), lateral key( pulp-to-side pinch, lateral prehension), tip pinch(tip-to-tip prehension)

27
Q

what is a Murphy’s sign positive for?

A

lunate dislocation

28
Q

what is a positive sign for a froments sign?

A

if when the patient grabs the paper their thumb flexes, because it is a positive for an ulnar nerve injury as adductor pollicis doesn’t work

29
Q

what is the most common tunnel syndrome in the body?

A

carpal tunnel syndrome

30
Q

what four carpal bones does the flexor retinaculum attach to?

A

scaphoid, pisiform, hook of hamate, trapezium

31
Q

what two muscles are the border of the snuff box?

A

extensor pollicis longus and extensor pollicis brevis

32
Q

what carpal bone can be palpated inside the snuff box?

A

scaphoid