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MSK UQ > Shoulder Pt. 1 > Flashcards

Shoulder Pt. 1 Flashcards

1
Q

close pack of GHJ

A

90 abd (or full)
full ER

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2
Q

open pack of GHJ

A

55 deg abd
30 deg horz add

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3
Q

capsular pattern of GHJ

A

ER>abd>IR

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4
Q

that glenoid labrum is made of ____cartilage

A

fibro (avascular and aneural)

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5
Q

T/F: the GH capsule is large, loose, and redundant

A

T

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6
Q

GHJ capsule fluid volume
normal:
adhesive capsulitis:
capsular laxity:

A

normal: 10-15 ml
adhesive capsulitis: 5-10 ml
capsular laxity: 30 ml

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7
Q

what occurs if the superior GH lig is incompetent?

A

humeral head will sublux inferiorly

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8
Q

when is the superior GH lig taut?

A

arm by side (0 deg abd)

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9
Q

which lig is a secondary restraint to anterior translation?

A

middle GH lig

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10
Q

which lig aids the RC to support suspended humeral head?

A

superior GH lig

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11
Q

the middle GH lig is absent or poorly defined in ___% of people

A

30%

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12
Q

what is the main static stabilizer of an abducted shoulder?

A

inferior GH lig

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13
Q

how does the inferior GH lig change with abd and rotation?

A

abd - taut
rotation - fans out

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14
Q

what lig allows reciprocal tightening of anterior and posterior structures w/ arm motions?

A

inferior GH lig axillary pouch

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15
Q

which part of the GHJ has no distinct capsular ligaments?

A

posterior capsule (very thin)

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16
Q

majority of posterior stability at GHJ comes from _____

A

dynamic stabilizers

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17
Q

what lig provides stability to the humeral head when the arm is abducted 90 deg and IR?

A

posterior band of inferior GH lig

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18
Q

main function of RC

A

provide dynamic balance and control

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19
Q

the RC muscles are a force couple with ___

A

deltoid

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20
Q

dynamic stability of the GHJ is achieve through contraction of ___ & _____

A

RC muscles and biceps

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21
Q

with arm at side, subacromial space is ___ mm

A

10-11

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22
Q

when is the subacromial space most narrow

A

b/w 60-120 deg of elevation

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23
Q

______ tendon is most involved with overuse injuries

A

supraspinatus

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24
Q

glenoid covers ____ of the humeral head

A

0.25-0.33

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25
what is the main articulation that suspends the UE from the trunk?
AC joint
26
T/F: the AC and SC joints are NOT controlled by active structures
T
27
closed pack of AC joint
90 deg abd
28
if pt says they separated their shoulder, they probably injured what?
coraco-clavicular lig at AC joint
29
what is the primary support for the AC joint?
coraco-clavicular lig
30
what is the only joint that connects the shoulder girdle to the axial skeleton?
SC joint
31
closed pack of SC joint
max elevation and protraction
32
open pack of ST joint
30-45 deg IR slight upward rotation 5-20 deg anterior tipping
33
the ST joint is only controlled by ____ structures
active (NO passive) (17 mm attach)
34
what is reverse scapulo-humeral rhythm?
scapula moves more than humerus ex: hike shld w/ min abd
35
nerve supply to GHJ
C5-8
36
nerve supply to ACJ
C4
37
sympathetic nerve supply to GHJ
T2-T8
38
the vascular supply of the shoulder primary are branches of the ___ artery
axillary
39
___ & ____ tendon are relatively avascular
supraspinatus and biceps
40
4 buckets of shoulder dysfunction
1. RC/impingement 2. frozen shoulder 3. GH instability 4. post-op/other
41
key + findings for RC/impingement
impingement signs painful arc pain w/ isometric movement weakness atrophy
42
key (-) findings for RC/impingement
significant loss of motion instability signs
43
key + findings for frozen shoulder
spontaneous progressive pain loss of motion in multiple planes pain at end ROM
44
key (-) findings for frozen shoulder
normal motion age < 40
45
____% of all shoulder pain in PT is related to RC dysfunction
50-70%
46
____% of people with frozen shoulder will develop it in the other UE
20-30%
47
stage I adhesive capsulitis
<3 months pain present
48
stage II adhesive capsulitis
freezing 3-9 months pain present
49
stage III adhesive capsulitis
frozen 9-14 months no pain
50
stage IV adhesive capsulitis
thawing 14+ months pain present
51
key + findings for GH instability
age <40 hx disloc/sublux apprehension general laxity
52
what is TUBS?
Trauma Unidirectional Bankart Surgery for instability
53
what is AMBRI?
Atraumatic Multidirectional Bilateral Rehabilitation Inferior (surgery)
54
anterior dislocations are ___% of all shoulder dislocations
>90%
55
T/F: when dislocate, always tear labrum
T
56
where is a Bankart lesion?
anterior inferior labrum (4-6:00)
57
what is a Hill-Sachs lesion?
depression in the glenoid due to impact to the humeral head
58
MOI for Bankart
traumatic abd, ER, extension
59
MOI for SLAP
trauma (usually in 90/90) repetitive microtrauma
60
where is SLAP?
2-10:00
61
MOI for posterior GHJ instability
flex, add, IR (football, bench press)
62
AC sprain present in ____% of pts with shoulder pain
31%
63
which AC joint sprains only require conservative treatment
type 1-2
64
which AC joint sprain has controversial treatment options
type 3
65
which AC joint sprains require surgical reduction
4-6
66
____ SC dislocations can be life threatening
posterior
67
what is the most commonly fractured bone in childhood?
clavicle
68
what is the most common humeral fracture in children and elderly?
proximal humerus
69
outcome measures for the shoulder
DASH QuickDASH Penn Shoulder Score SPADI K-JOC Score (baseball)

MSK UQ (15 decks)

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