Starred Lecture Items L11 Flashcards

(83 cards)

1
Q

three reasons you can tell if distal humerus (elbow) bone is posterior

A

medial sticks out further than the lateral epicondyle
trochlea is distal
head of the radius is lateral

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2
Q

how many carpal bones (1 hand)

A

8

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3
Q

how many metacarpal bones (1 hand)

A

5

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4
Q

how many phalanges of long fingers (1 hand)

A

12

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5
Q

how many phalanges of thumb (1 hand)

A

2

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6
Q

how many bones total from your watch down

A

29 bones

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7
Q

bony landmark of distal radius/ ulna

A

radial styloid and ulnar styloid

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8
Q

where is the head of the ulna

A

at the wrist

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9
Q

where is the lister’s tubercle found

A

distal, dorsal radial side

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10
Q

how many carpals in the proximal row

A

4

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11
Q

how many carpals in the distal row

A

4

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12
Q

acronym for carpal bones

A

so long to pinkie here comes the thumb
scaphoid, lunate, triquetrum, pisiform, hamate, capitate, trapezoid, trapezium

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13
Q

how do you know if hand is dorsal or ventral based on bone orientation

A

listers tubercle is only visible on dorsal side, pisiform (sesamoid) bone is partially eclipsed on the dorsal side, (ventral is fully visible)

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14
Q

distal radioulnar joint (DRUJ) movement

A

only pronation and supination

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15
Q

radiocarpal joint movement

A

wrist flexion, extension, radial deviation, ulnar deviation

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16
Q

which of the following joints when injured will restrict wrist flexion and extension

A

radiocarpal joint

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17
Q

which arm bone contributes at the wrist

A

only the radius articulates

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18
Q

why does the ulna not contribute at the wrist

A

its shorter so it doesnt articulate

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19
Q

which bone is higher in the elbow

A

olecranon is more proximal/ higher than radial head

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20
Q

which bones are involved in the radiocarpal joint?

A

radius and scaphoid & lunate

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21
Q

midcarpal joint movements

A

flexion, extension, radial deviation, ulnar deviation, circumduction

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22
Q

radial collateral ligament is found in…

A

radial side of elbow and wrist

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23
Q

what ligament takes up the space between the ulna and wrist

A

triangular fibrocartilage (TFC) disc– cushion between ulna and carpals

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24
Q

metacarpophalangeal joint movement

A

flexion, extension, abduction, adduction

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25
what tendon connects into the pisiform
FCU
26
laymen's term for metacarpophalangeal joints
knuckles
27
where does ab/adduction happen in the fingers
metacarpophalangeal joints
28
interphalangeal joints movements and types
finger flexion extension proximal and distal interphalangeal joints (PIP and DIP)
29
how many IP joints in the thumb
1
30
carpometacarpal joint/ basilar joint motion
flexion extension abduction adduction of thumb
31
what carpal bone articulates with the 1st metacarpal
trapezium
32
peripheral nerve sensory innervations
33
extrinsic muscles of the arm (where does it start/ end and function)
originates proximal to wrist generates greater force
34
intrinsic muscles (where do they start and end and function)
contains entirely within the hand generates precise control
35
superficial layer of the extrinsic extensor muscles (5)
ECRL ECRB ECU extensor digitorum extensor digiti minimi
36
deep layer of the extrinsic extensor muscles
extensor indicis supinator
37
brachioradialis attachments
lateral supracondylar ridge of humerus distal lateral radius
38
outcropping layer of the extrinsic extensor muscles
APL EPB EPL
39
extensor carpi radialis longus and brevis action
extend the wrist radially deviate the wrist
40
extensor carpi radialis longus and brevis attachments
longus: lateral supra-epicondylar ridge of humerus and dorsal base of 2nd metacarpal brevis: lateral epicondyle of humerus and dorsal base of 3rd metacarpal
41
tennis elbow involves what muscles
superficial extensors ECRL and ECRB
42
which is acute & which is chronic: lateral epicondylitis vs epicondylosis
epicondylitis= chronic (inflamed, wear & tear) epicondylosis (acute)
43
extensor digitorum actions
extends medial 4 digits
44
extensor digitorum attachments
extensor expansion of medial 4 digits lateral epicondyle of humerus (common extensor tendon)
45
extensor digiti minimi actions
extend 5th digit
46
extensor digiti minimi attachments
lateral epicondyle of humerus extensor expansion of 5th digit
47
is there a flexor carpi radialis longus
no
48
which two muscles attach to base of the 5th metacarpal
FCU and ECU
49
two main muscles that flex wrist
FCU FCR
50
two and a half muscles that extend wrist
ECU ECRL ECRB
51
two muscles that radially deviate
ECRL ECRB FCR
52
two muscles that ulnar deviate
ECU FCU
53
which two lift pointer finger
extensor digitorum and extensor indicis
54
extensor indicis actions
extend 2nd digit ASSIST with wrist extension
55
extensor indicis attachments
posterior distal ulna and interosseous extensor expansion 2nd digit
56
outcropping muscles
abductor pollicis longus extensor pollicis brevis extensor pollicis longus
57
abductor pollicis longus attachments
posterior proximal ulna, radius, and interosseous membrane base of 1st metacarpal
58
what radially abducts the thumb
abductor pollicis longus
59
abductor pollicis longus attachments
posterior proximal ulna, radius, and interosseous membrane base of 1st metacarpal
60
extensor pollicis brevis and longus attachments
longus: posterior ulna and interosseous membrane brevis: posterior radius and interosseous membrane longus: base of distal phalanx of thumb brevis: base proximal phalanx of thumb
61
extensor pollicis brevis and longus actions
longus: extend thumb at the IP joint both: extend thumb at MCP and CMC joints
62
which muscle extends the distal phalanx of thumb
extensor pollicis longus
63
what muscles create the anatomical snuffbox
APL EPB EPL
64
dermatomes for the arm
65
dermatomes for the hand
66
whats the dermatome and myotome for the thumb
myotome/ thumb extension= C8 skin is enervated by= C6
67
what keeps tendons in place and separates them into 6 compartments
extensor retinaculum
68
what are the 6 dorsal wrist compartments
69
dorsal wrist compartment 1
abductor pollicis longus and extensor pollicis brevis (APL and EPB)
70
dorsal wrist compartment 2
extensor carpi radialis longus and extensor carpi radialis brevis (tennis elbow)
71
dorsal wrist compartment 3
extensor pollicis longus (listers tubercle)
72
dorsal wrist compartment 4
extensor digitorum and extensor indicis
73
dorsal wrist compartment 5
extensor digiti minimi
74
dorsal wrist compartment 6
extensor carpi ulnaris
75
what compartments is the anatomical snuffbox between
1 and 3
76
de quervains tenosynovitis what compartment is involved
cumulative trauma/ inflammation of the tendon covering of the 1st dorsal compartment (acute) "texting thumb"
77
tenodesis
passive finger flexion created by active wrist extension (wrist extension causes fingers to close) spinal cord injury: they have C6 but nothing down
78
smith fracture
volar (palmar) displacement of distal radius
79
colles' fracture
dorsal displacement of distal radius
80
which fracture is more common: smith or colles'
colle's
81
listers tubercle is on the..... side
dorsal
82
which side of the wrist would get a plate after a fracture
volar side because no listers tubercle (its flatter)
83
what is most commonly fractures in a FOOSH injury
scaphoid