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ARTHROLOGY > quiz #2 - shoulder > Flashcards

quiz #2 - shoulder Flashcards

(51 cards)

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1
Q

4 joints that make up the shoulder

A

-glenohumeral (GH) joint
-scapulothoracic joint
-sternocalvicular (SC) joint
-acromioclavicular (AC) joint

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2
Q

glenohumeral (GH) joint

A

main shoulder movement

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3
Q

scapulothoracic joint

A

accessory joint
aids & stabilizes GH joint

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4
Q

sternoclavicular (SC) joint

A

accessory joint
attaches upper arm to axial skeleton via clavicle

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5
Q

acromioclavicular (AC) joint

A

accessory joint
attaches scapula to axial skeleton via clavicle

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6
Q

sternoclavicular (SC) joint - type

A

synovial, saddle or plane, diarthrosis, multiaxial

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7
Q

sternoclavicular (SC) joint - articular surfaces

A

convex sternal head of clavicle on concave manubrium of sternum

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8
Q

sternoclavicular (SC) joint - ligaments

A

joint capsule
sternoclavicular ligament (anterior & posterior)
interclavicular ligament
costoclavicular ligament
articular disc

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9
Q

sternoclavicular (SC) joint - movements

A

elevation, depression
protraction, retraction
rotation

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10
Q

acromioclavicular (AC) joint - type

A

synovial, plane, diarthrosis, triaxial

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11
Q

acromioclavicular (AC) joint - articular surfaces

A

convex acromion
convex lateral clavicle

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12
Q

acromioclavicular (AC) joint - ligaments

A

fibrous capsule
acromioclavicular ligament
coracoclavicular ligaments (trapezoid & conoid)
coracoacromial ligament

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13
Q

acromioclavicular (AC) joint - movements

A

elevation, depression
protraction, retracting
upward / downward rotation

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14
Q

glenohumeral (GH) joint - type

A

synovial, ball & socket, diarthrosis, multiaxial

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15
Q

glenohumeral (GH) joint - articular surfaces

A

convex head of humerus
concave glenoid cavity of scapula

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16
Q

glenohumeral (GH) joint - ligaments

A

ANTERIORLY: superior, middle, inferior humeral ligaments
SUPERIORLY: coracohumeral ligament, transverse humeral ligament

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17
Q

transverse humeral ligament function

A

holds tendon of biceps (long head) in the intertubercular groove

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18
Q

glenohumeral (GH) joint - movements

A

flexion, extension
ABD, ADD
horizontal ABD, ADD
medial & lateral rotation
circumduction

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19
Q

GH joint - shoulder bursa

A

subacromial / subdeltoid bursa
lies just below acromion & deltoid muscle

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20
Q

GH joint - glenoid labrum

A

made of fibrocartilage attached to rim of glenoid cavity
deepens cavity & increases surface of joint

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21
Q

GH joint movements coupled with …

Study These Flashcards
A

movements in AC & SC joints at same time

22
Q

GH - loose packed / resting position

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A

40-55 degrees ABD
30 degrees horizontal ADD (in scapular plane)

23
Q

GH - closed packed position

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A

full ABD with lateral (external) rotation

24
Q

GH - capsular pattern of restriction

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A

lateral (external) rotation
ABD
medial (internal) rotation

25
GH ROM - FLEXION & EXTENSION
flexion: 160-180 extension: 50-60
26
GH ROM - ABD & ADD
ABD: 170-180 ADD: 50-75
27
GH ROM - horiztonal ABD/ flexion
130 degrees
28
GH ROM - horizontal ADD/ extension
45 degrees
29
GH ROM - INTERNAL & EXTERNAL rotation
internal: 80-90 external: 80-90
30
GH - subacromial space
region between humerus & acromion -roof is formed by CORACOACROMIAL LIGAMENT
31
GH - subacromial space: 3 structures that live in the space
supraspinatus tendon biceps (long head) tendon subacromial bursa
32
scapulothoracic joint - type
not a true joint, modified gliding mostly consists of: muscle tissue (serratus anterior & subscapularis mm), CT, fascia, large bursa (subscapular bursa)
33
scapulothoracic joint - articular surfaces
concave subscapular fossa surface on convex posterior ribs
34
scapulothoracic joint - movements
sliding/ gliding protraction, retraction elevation, depression upward & downward rotation of glenoid fossa -upward (lateral/ external rotation) -downward (medial/ internal rotation)
35
scapulothoracic joint - loose packed position
when arm is resting at side *no closed packed position for this joint
36
scapulothoracic joint RHYTHM
scapulothoracic joint movement -involves 3 joints moving together synchronized (humerus, scapula, clavicle)
37
PHASE 1 (ABD)
humerus: 30º ABD scapula: minimal movement clavicle: 0-5º elevation
38
PHASE 2 (ABD)
humerus: 40º ABD scapula: 20º rotation (upward) clavicle: 15º elevation
39
PHASE 3 (ABD)
humerus: 60º ABD scapula: 30º rotation clavicle: 30-50º posterior rotation, 15º upward elevation
40
humeral-scapular ratio
for every two degrees of motion in humerus there is one degree of motion in scapula = humeral-scapular ratio
41
scapulothoracic joint - AROM protraction & retraction
30º
42
scapulothoracic joint - AROM elevation & depression
30º
43
scapulothoracic joint - AROM medial & lateral rotation
50º
44
scapulothoracic joint - functions
-increases ROM of shoulder for greater reach -maintains length-tension relationship with deltoid muscle -provides GH stability: GH head alignment -injury prevention through shock absorption -permits elevation of body
45
muscles that move shoulder - FLEXION
anterior deltoid biceps brachii pectoralis major
46
muscles that move shoulder - extension
posterior deltoid triceps brachii
47
muscles that move shoulder - ABD
middle deltoid supraspinatus
48
muscles that move shoulder - ADD
teres major latissimus dorsi
49
muscles that move shoulder - HORIZONTAL ADD
pectoralis major coracobrachialis
50
muscles that move shoulder - INTERNAL ROTATION
subscapularis pectoralis major latissimus dorsi
51
muscles that move shoulder - EXTERNAL ROTATION
infraspinatus teres minor

ARTHROLOGY (11 decks)

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