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PHYS grad > Shoulder SOL > Flashcards

Shoulder SOL Flashcards

1
Q

Which 2 bones that make up the shoulder joint?

A

Humerus and scapula

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2
Q

Another name for shoulder joint

A

Glenohumeral joint

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3
Q

2 articular surfaces of shoulder joint

A

Humeral head, Glenoid fossa of the scapula

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4
Q

What type of joint is the shoulder joint

A

Ball and socket

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5
Q

Mvmt available at the shoulder joint and plane

A

Flex/ext (sagittal plane, forward and backward)
ABD/ADD (frontal plane, side to side)
Horizontal ABD/ADD, rotation/circumduction (transverse plane)

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6
Q

Shape of the articular surfaces

A

Concave (fossa) and convex (head)

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7
Q

How much of the head of the humerus can the glenoid fossa contain and what structure helps to deepen the fossa? Where is it attached?

A

Less than 1/3.
Labrum attached to the glenoid fossa of the scapula

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8
Q

Where is the fibrous joint capsule attached?

A

From anatomical neck of humerus to border of the glenoid fossa

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9
Q

2 ligaments that reinforce the joint capsule

A

Coracohumeral ligament (coracoid process to lesser tubercle)

Glenohumeral ligament (sup, middle, inf - 3 bands)

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10
Q

Is the shoulder joint a stable or mobile joint? Why

A

Mobile. Ball and socket joint, shallow joint fossa, large ROM and allow many types of movement in 3 planes

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11
Q

Rotator cuff muscles (4)

A

Supraspinatus, infraspinatus, teres minor, subscapularis

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12
Q

Origin of Supraspinatus

A

Supraspinous fossa of the scapula

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13
Q

Insertion of Supraspinatus

A

Sup aspect of greater tubercle of humerus

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14
Q

Innervation of Supraspinatus

A

Suprascapular N (C5-6)

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15
Q

Action of Supraspinatus

A

Initiate shoulder ABD 0-15 DEG,
shoulder stability - keep the head pressed medially in the fossa

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16
Q

Origin of infraspinatus

A

Infraspinatus fossa of scapula

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17
Q

Insertion of infraspinatus

A

Middle facet of greater tubercle
Joint capsule

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18
Q

Innervation of infraspinatus

A

Suprascapular N (C5-6)

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19
Q

Action of infraspinatus

A

ER, EXT

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20
Q

Origin of subscapularis

A

Medial 2/3 of subscapularis fossa

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21
Q

Insertion of subscapularis

A

Lesser tubercle, front of joint capsule

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22
Q

Innervation of subscapularis

A

Upper and lower subscapular n (C5-6)

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23
Q

Action of subscapularis

A

IR

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24
Q

Origin of teres minor

A

Upper 2/3 of lateral border of posterior scapula

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25
Insertion of teres minor
Inf facet of greater tubercle
26
Innervation of teres minor
Axillary N C5-6
27
Action of teres minor
ER (main) ADD (weak)
28
As well as holding the head of the humerus in the glenoid fossa what other actions do the rotator cuff muscles perform?
- Shoulder stability – holding the head in the socket - Meidal and lateral rotation
29
Origin of teres major
Post of inf angle of scapula
30
Insertion of teres major
Medial lip of bicipital groove of humerus
31
Innervation of teres major
Lower subscapular N (C5-6)
32
Action of teres major
ADD,Ext, IR
33
Origin of Pectoralis major (2 heads)
Clavicular head: ant surface of medial half of clavicle Sternal head: ant surface of manubrium, body of sternum, ant surface of sup 6 costal cartilages, aponeurosis of external oblique
34
Insertion of Pectoralis major
Lateral lip of bicipital groove
35
Innervation of Pectoralis major (dual)
Clavicular head: lateral pectoral N Sternocostal head: medial pectoral N
36
Action of Pectoralis major
ADD, IR, FLEX (Clavicular head), EXT (sternal head)
37
Origin of Pectoralis minor
Underneath pec major, above serratus anterior. Create a passage b//w the ribs for the brachial plexus and subclavian A&V Ant surface of 3–5th ribs, close to costal cartilage Variation in origin is common
38
Insertion of Pectoralis minor
Coracoid process
39
Innervation of Pectoralis minor
Medial pectoral N (C8-T1)
40
Action of Pectoralis minor
Depress, protract the scapular Elevate the ribs in inspiration (reverse action)
41
Origin of coracobrachialis
Covered by pec major, deltoid, biceps brachii Coracoid process of scapula, in b//w pec minor and short head of biceps brachii
42
Insertion of coracobrachialis
Medial side of mid shaft of humerus
43
Innervation of coracobrachialis
Musculocutaneous N
44
Action of coracobrachialis
Flex, ADD
45
Origin or Lats
Spinous process of T7-L5 vertebrae Post iliac crest Inf angle of scapula Lower 3-4 ribs
46
Insertion of Lats
Floor of bicipital groove (middle, b//w pec and teres majors) The lady b//w the 2 majors lol
47
Innervation of Lats
Thoracodorsal N (C6-8)
48
Action of Lats
Work w/ teres major and pec major ADD,IR, EXT Depres and retract scapula Bring the body towards the arms when the arms are fixed (climbing, chin-ups)
49
Origin of deltoid (ant head)
Ant surface of lateral 3rd of clavicle
50
Origin of deltoid (middle head)
Acromion process
51
Origin of deltoid (post head)
Scapular spine
52
Insertion of deltoids
All fibers converge to insert into the deltoid tuberosity on humerus
53
Innervation of deltoids
Axillary N (C5-6)
54
Action of deltoid (tgt)
Tgt: ABD, shoulder stability (esp when carrying a load), compensates for the loss of strength in the rotator cuff
55
Action of deltoid (ant)
Flex (bring arms forward)
56
Action of deltoid (middle)
ABD
57
Action of deltoid (post)
EXT
58
Muscles that do shoulder flexion (4)
Ant delt, coracobrachialis, pectoralis major, long head of biceps brachii
59
Muscles that do shoulder extension (3)
Post delt Lats Teres major
60
Muscles that do shoulder ABD (4)
Supraspinatus, deltoids, trapezius, serratus ant (above 90)
61
Muscles that do shoulder ADD (4)
pectralis major, Lats, teres major and minor (assist)
62
Muscles that do shoulder IR (5)
subscapularis, pectoralis major, Lats, teres major, ant deltoid.
63
Muscles that do shoulder ER (2)
Infraspinatus, teres minor
64
ACJ full name
Acromioclavicular joint
65
SCJ full name
Sternoclavicular joint
66
What mvmt are possible at the shoulder girdle
Elevation, depression, upward and downward rotation, protraction and retraction
67
Origin of rhomboid major
Spinous process of T2-5
68
Insertion of rhomboid major
Medial border of scapula from level of scapular spine to inf angle
69
innervation of rhomboid major
Dorsal scapular N (DSN)
70
Action of of rhomboid major
Retracts the medial border of scapula Elevate, rotate
71
Origin of rhomboid minor
Spinous process of C7-T1
72
Insertion of Rhomboid minor
Medial border of the scapular sup to spine level
73
Action of Rhomboid minor
Retract, elevate, rotate
74
Origin of Levator scapulae
Transverse process of C1-4
75
Insertion of Levator scapulae
Medial border of the scapula b//w spine and the sup angle
76
Innervation of Levator scapulae
Cervical N (C3-4), dorsal scapular N (C5)
77
Action of Levator scapulae
Elevate the scapula, downward rotation, when the scapula is stabilized, it laterally flexes and rotates the next to the same side (reverse action)
78
Origin of traps
Spinous process and supraspinous ligament of C7-T12, External occipital protuberance, Nuchal ligament, Medial 3rd of superior Nuchal line
79
Insertion of traps
Lateral 3rd of clavicle, Acromion, Spine of scapula
80
Origin of Serrastus Ant (boxer’s muscle)
Top lateral surface of 1-8/9th ribs, wraps around the rib cage, passing beneath the scapula
81
Insertion of Serratus Ant
Medial border of the scapula
82
Innervation of Serratus Ant
Long thoracic N (C5-7)
83
Action of Serratus Ant
Protract, upward rotation, stabilization - keeping the shoulder blades against the rib cage at rest and during mvmt
84
What muscles elevate the scapula (4)
Upper trap, Levator scapulae, Rhomboid major and minor
85
What muscles depress the scapula (5)
Lats, serratus ant, lower traps, pec major and minor,
86
What muscles protract the scapula (2)
Serratus ant, Pec minor
87
What muscles retract the scapula (4）
Rhomboid major and minor Mid trap, Lats
88
What muscles Upward rotation of scapula (2)
Trap Serratus ant
89
What muscles downward rotate the scapula (6)
Lats, Rhomboids major and minor, Levator scapulae, Pec major and minor
90
special test for ACJ (2)
scarf test obrien’s test
91
special test for sub acromial pain (2)
full can hawkins kennedy
92
special test for trauma: cuff weakness (3)
bear hug & belly press ER lag sign
93
special test for instability (3)
apprehension sulcus sign load and shift test

PHYS grad (15 decks)

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