Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Kines Test 2 > Wrist and Hand > Flashcards

Wrist and Hand Flashcards

0
Q

What is circumduction and can the wrist perform it?

A

combine flexion, extension, radial and ulnar deviation

*yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Wrist complex - how many joints

A

2
radiocarpal & midacarpal
*having 2 joints permits greater ROM with less articular surface and more pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Normal ROM: wrist flexion

A

80

65-85

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Normal ROM: wrist extension

A

70

60-85

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Normal ROM: Ulnar deviation

A

30

20-45

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Normal ROM: Radial deviation

A

20

15-21

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Proximal segment of wrist joint

A

radiocarpal joint

concave radius and radioulnar disc - convex carpals (scaphoid,lunate and Triquetrum)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what does TFCC stand for

A

triangular fibrocartilage complex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Proximal radiocarpal joint is angled

A

volarly - 11 degrees
ulnarly - 23 degrees
*because the radius is longer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

There is contact between __ & __ % of the surfaces

A

30 & 40

*this alows for more flexion than extension and more ulnar deviation than radial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Compression at the wrist

A

80% in scaphoid and lunate
- lunate =40% contact while scaphoid is 60% contact)
TFCC 20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Ulnar variance

A 
positive - radius and ulna at same level
*possible inpingement of TFCC
*thinner TFCC
negative - unla shorter than radius
*abnormal force distribution
*avascular necrosis of lunate
THick TFCC
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

FOOSH

A

(fall on outstretched hand)
* a long ulna may be present after a distal radius fracture
trouble with ulnar deviation and pronation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Midcarpal joint structure

A

Proximally - Scaphoid, lunate and triquetrium
distal - trapezium, trapezoid, capitate, hamate
*concave - convex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Extrinsic ligaments

A
  • connect carpals to radius and ulna

- weaker but better potential for healing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Intrinsic Ligs

A
  • interconnect the carpals

- stronger but rely on synovial fluid for nutrition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Closed pack position for wrist

A

extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Closed pack position for radiocarpal and midcarpal

A

full radial deviation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

min ROM for ADLs

A

flex: 10
ex: 35
OR
Flex: 54
Ex: 60
UD: 40
RD:17
*wrist extension and ulnar deviation is most important

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Best position to stabilize wrist in

A

20 degrees extension and 10 degrees of ulnar deviation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Volar wrist muscles

A

flexion
PL, FCR, FCU
* FCR and FCU work together in flexion to avoid deviation
*PL absent in 14%
*FCU - on the pisiform - increases the MA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Dorsal wrist muscles

A

extensors
* ECU, ECRL, ECRB
* all work together to avoid deviation
ECU - affected by forearm position; decreased moment arm in pronation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Carpal Tunnel

A
  • Proximal transverse arch - transverse carpal lig
  • between hook of hammate&pisiform and Scaphoid&trapezium
  • contents = median nerve and 9 extrinsic flexor tendons
  • FPL, 4 FDS, 4 FDP
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Long term median nerve compression at the carpal tunnel will cause

A

atrophy of the thenar eminence = ape hand

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
If force is transmitted from FCU --> pisiform where does it go next?
hamate and 5th metacarpal
25
bones of the distal carpal row contribute to __ degrees of freedom to the wrist
2 | *flexion/extension & ulnar/radial deviation
26
Midcarpal joint favors which motions?
extension and radial deviation
27
Which ligaments are thicker? dorsal or volar?
volar (palm)
28
Volar ligaments
volar radiocarpal lig - radiocapitate - radiolunte - radioscapholunate - radial collateral - ulnar collateral * all extrinsic - Scapholunate - Lunotriquetral * both intrinsic
29
Dorsal ligaments
- dorsal radiocarpal | - dorsal intercarpal
30
distal to the carpals, there are __ bones
19
31
2nd-4th CMC joints
plane synovial | *1 degree of freedom
32
5th CMC
saddle * 2 degrees - the immobile second and third allow 1st 4th and 5th to move
33
MCP joints
``` convex metacarpal on concave base of phalanx condyloid 2 degrees of freedom flex/ex ab/add capsule is lax in extension ```
34
Volar plate limits
hyperextension of MCP
35
Closed pack position of MCP
extension
36
Flexion at MCP increases __
radially to ulnarly * index finer 90 * little finger 100
37
Abuction and adduction at max when MCP
is in extension
38
IP joints
are synovial hinge | 1 degree of freedom
39
Which has more ROM DIP or PIP
PIP
40
when fingers are flexed they point towards
scaphoid
41
Best position to immobilze hand in
MCP flexion IP joint extension thumb CMC abduction
42
FDS attachs to
proximal to DIP
43
FDS action
flex PIP assist in MCP flexion greater MA at MCP and less at PIP used when greater force needed during wrist flexion
44
FDP
Attaches to DIP flexes DIP, PIP and MCP primary muscle with gentle pinch
45
T or F: FDS and FDP do not depend on wrist position
F | both muscles depend on wrist position for optimal length-tension relationship
46
When FDS is not active/present what happens when pinch pinky to thumb?
the DIP flexes and PIP extends ; the FDP is not able to flex both joints
47
Pistol grip
wider ulnarly hammer or cup FDS and FDP can work better on the and 5th fingers more ulnar deviation
48
Gliding mechanism
Flexor retinacula, bursae and digital tenon sheath
49
Only muscles able to form MCP extension
ED, EDM and EI * also perform wrist extension * the ED splits into a central tendon and lateral bands distal to the PIP joint
50
ED contraction
tension on extensor hood and causes MCP joint extension causes PIP and DIP flexion due to passive insuff. need assistance from intrinsic muscles to achieve PIP and DIP extension
51
Dorsal and Volar interossei
-arise between metacarpals -attach to extensor hood and lateral bands -just volar to MCP joint axis - compress MCP joint when in extension -when in extension they perform finger ab and add -extension occurs together DAB PAD
52
Lumbricals
- FDP and lateral band of extensor mechanism - IP extension regardlessof MCP poisition - L
53
Clawing is a result of
loss of intrinsic muscles | * wear a splint to keep MCP in flexion so that ED can cause PIP and DIP extension without the intrinsic muscles
54
a ruptured central tendon can cause
Boutonniere deformity - flex PIP - ex DIP
55
Swan neck deformity
Ex of PIP - flex DIP
56
1st CMC joint
trapezoid and 1st metacarpal saddle 2 degrees of freedom
57
MCP of thumb
condyloid 2 degrees of freedom less ROM than fingers
58
IP of thumb
identical to fingers | hinge
59
Extrinsic thumb muscles
``` FPL - volar EPB - dorsal; base of prox phalanx EPL - dorsal; base of distal phalanx APL - dorsal; base of metacarpal * all are affected by wrist position ```
60
Intrinsic thumb muscles
- 5 thenar muscles - OP, APB, FPB, AP, first volar interossei - 1st dorsal interossei is bipennate arising from both 1st and 2nd metacarpal
61
Power grip
``` full hand prehension - grab something cylindrical grip (cup), spherical (ball)*more interossei, hook (suit-case), lateral (paper between fingers) ```
62
Precision handling
finger-thumb prehension - pad to pad - tip-tip * worst - less SA - pad -side or lateral pinch * lateral pinch generates more force - greater surface area and use of FPB bc thumb more adducted * less precise because creates most force
63
Which position of the wrist optimizes force of finger flexors
ulnar deviation

Kines Test 2 (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions