Shoulder Flashcards

1
Q

ligaments of SCJ

A

anterior and posterior sternoclavicular

costoclavicular ligament

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2
Q

SCJ elevation

A

48 degrees

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3
Q

SCJ depression

A

less than 15

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4
Q

SCJ protraction

SCJ retraction

A

20

30

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5
Q

SCJ anterior rotation

posterior rotation

A

less than 10

50

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6
Q

has anterior and posterior fibers
limits elevation
contributes to inferior gliding of clavicle- keeps it in the joint

A

costoclavicular ligament

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7
Q

ACJ is what type

A

synovial plane

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8
Q

ligaments of ACJ

A

superior and inferior acromioclavicular lig

trapezoid and conoid of coracoclavicular lig

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9
Q

allows the scapula to rotate in 3 dimensions during arm movement

A

ACJ

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10
Q

transmits forces from UE to the clavicle

A

ACJ

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11
Q

ACJ motions occur in what plane

A

scapular plane

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12
Q

ACJ IR/ER

A

30

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13
Q

ACJ anterior and posterior tilting

A

20-40

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14
Q

ACJ upward and downward rotation

A

30

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15
Q

capsule is weak
superior and inferior ligs
superior checks distal from moving posteriorly

A

ACJ

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16
Q

resists distal clavicular superior motion

A

conoid of CC lig of ACJ

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17
Q

limits posterior displacement of clavicle

A

trapezoid of CC lig of ACJ

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18
Q

limits upward rotation of scapula

posteriorly rotates clavicle

A

coracoclavicular lig

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19
Q

GH joint is what type

A

ball and socket synovial

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20
Q

GH angle of inclination

A

130-150

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21
Q

GH torsion angle

A

30

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22
Q

GH capsule is taut ? and loose ??

A

superiorly

anteriorly and inferiorly

23
Q

GH ligaments

A

superior, middle, inferior GH

coracohumeral lig

24
Q

contributes to anterior and inferior joint stability
by limiting anterior and inferior translation
when arms at sides

A

superior GH lig

25
contributes to anterior joint stability by limiting anterior humeral translation with arms at sides and up to 60 degrees ABD
middle GH lig
26
abduction beyond 45 degrees or combo of abduction and either rotation which lig stabilizes?
IGHLC
27
limits inferior translation of humeral head in dependent arm position
coracohumeral lig
28
resists humeral lateral rotation with arm adducted
coracohumeral lig.
29
if a person cant elevate their arm, they also have limited ?
ER
30
with GH abduction, you get
ER
31
in the scapular plane, with ABD, the GH does
less ER
32
GHJ flexion pairs with ? | controversial
IR
33
STJ coronal plane degrees?
30-45 degrees
34
STJ anteriorly tilted
10-15 degrees
35
STJ upwardly rotated
10 degrees
36
if total ROM is 180 degrees, how much comes from where?
60 from STJ | 120 from GHJ
37
scpaulohumeral rhythm minimizes?
active insufficiency
38
3 motions of scapulohumeral rhythm
humeral elevation upward scapular rotation posterior tilt of scapula
39
supraspinatus action
abduction
40
infraspinatus action
ER
41
teres minor action
ER and ADDuction
42
subscapularis action
IR and extension
43
deltoid actions
scapular depression | shoulder flexion, extension, ABDuction, horizontal ABDuction
44
which muscle is most active 0-60 degrees of abduction
suprapsinatus
45
prime flexor for elevation | assist abduction after 15 degrees
deltoid
46
what causes superior glide of humerus and inferior glide?
deltoid- superior glide | RTC- inferior glide
47
shoulder depressors in WB
lats and pec major
48
prevents scapula IR
rhomboids
49
which muscle does IR
teres major
50
scapular depression and abduction
pec minor
51
scapular winging in flexion shows
serratus anterior weakness
52
scapular winging in abduction is what weakness
trapezius weakness
53
SCJ is what type
synovial plane