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NPTE MS > Wrist and Hand > Flashcards

Wrist and Hand Flashcards

1
Q

Radius is ___ relative to the carpals

A

Biconcave

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2
Q

Ulna is ___ at its distal end relative to the triquetrum

A

Convex

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3
Q

Proximal aspect of proximal row is

A

Biconvex

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4
Q

Distal aspect of proximal row is

A

Concave

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5
Q

Metacarpal heads are ____

A

Biconvex

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6
Q

Phalanges’ proximal ends are mostly ___

A

Biconcave

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7
Q

Phalanges’ distal ends are mostly ___

A

Biconvex

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8
Q

Dorsal radiocarpal joint limits

A

flexion, pronation, and some radial deviation

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9
Q

Radiocarpal joint - articulation

A

Convex scaphoid and lunate articulate with concave radius

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10
Q

Carpometacarpal joint - articulation - First CMC is what

A

A saddle articulation

Trapezium convex in med/lat direction, concave in ant/post direction

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11
Q

Carpometacarpal joint - articulation - 2nd through 5th CMC

A

flat between bases of metacarpals and distal row of carpals

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12
Q

MCP joints - articulation

A

Convex metacarpals with concave proximal phalanges

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13
Q

PIP joints - articulation

A

Convex distal aspect of proximal phalanges with concave proximal aspect of middle phalanges

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14
Q

Wrist flexors

A

Flexor carpi radialis
Flexor carpi ulnaris
Palmaris longus
Flexor digitorum profundus

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15
Q

Wrist extensors

A

Extensor digitorum
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris

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16
Q

Radial deviators

A

Flexor carpi radialis

Extensor carpi radialis longus and brevis

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17
Q

Ulnar deviators

A

Flexor carpi ulnaris
Flexor digitorum profundus
Extensor carpi ulnaris

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18
Q

Extrinsic finger flexors

A

Flexor digitorum superficialis - to PIP joint

Flexor digitorum profundus

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19
Q

Extrinsic finger extensors

A

Extensor digitorum

20
Q

Intrinsic muscles

A 
Thenar mm
Hypothenar mm
Lumbricals
Dorsal interossei 
Palmar interossei
21
Q

Intrinsic muscles - thenar mm

A

Abductor pollicis brevis
Opponens pollicis
Flexor pollicis brevis
Adductor pollicis

22
Q

Intrinsic muscles - hypothenar mm

A

adductor digiti minimi
opponens digiti minimi
flexor digiti minimi

23
Q

Lumbricals do what

A

Flex MCP
Ext IP
Radially deviate MCP

24
Q

Dorsal interossei do what

A

ABD

25
Q

Palmar interossei do what

A

ADD

26
Q

Collateral finger ligaments run

A

separately from lateral condyle to distal phalanx and lateral volar plate at each MP, PIP, and DIP

27
Q

Accessory finger ligaments run from

A

condylar head to volar plate

28
Q

Transverse finger ligaments are present at

A

MCP joints

29
Q

Wrist Radial Collateral Ligament - limits

A

Ulnar deviation

30
Q

Wrist Ulnar Collateral Ligament - limits

A

Radial deviation

31
Q

Wrist Palmar Ulnocarpal ligament - limits

A

Extension and supination

32
Q

Wrist Palmar Radiocarpal Ligament - limits

A

Extension and supination through knuckles

33
Q

Extensor hood - expansion of

A

Extensor digitorum mm

34
Q

Extensor hood - pupose

A

Assist with extension of PIP and DIP joints

35
Q

Volar Plate - present on

A

Palmar aspect of MCP, PIP, and DIP joints

36
Q

Volar plate - functions to

A

increase articular surface during extension and protect joint volarly
Volar plate is more mobile at MCP than at IPs

37
Q

PIPs and DIPs - biomechanics - during flexion the digits

A

rotate radially to enhance grasp and opposition

38
Q

MCPs - biomechanics - during flexion, digits

A

rotate radially

39
Q

First CMC - during flex/ext

A

Concave on convex

40
Q

First CMC - during abd/add

A

Convex on concave

41
Q

First CMC - during flex and abd

A

First MC rotates ulnarly

42
Q

First CMC - during ext and add

A

First MC rotates radially

43
Q

Wrist biomechanics - flexion

A

Proximal scaphoid/lunate glide dorsally relative to radius

44
Q

Wrist biomechanics - extension

A

Proximal scaphoid.lunate glide ventrally relative to radius

45
Q

Wrist biomechanics - Radial deviation

A

Proximal row glides ulnarly

Proximal surface of scaphoid rotates palmarly

46
Q

Wrist biomechanics - Ulnar deviation

A

Proximal row glides radially as a unit

NPTE MS (29 decks)

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