Exam 2

Question 0

Clavicular depression

Answer 0

15

Question 1

Clavicular elevation

Answer 1

45-48

Question 2

Clavicular protraction

Answer 2

15-20

Question 3

Clavicular retraction

Answer 3

30

Question 4

Clavicular post rotation

Answer 4

50

Question 5

Scapula (ac) IR/ER

Answer 5

60

Question 6

Scapula (ac) AP tipping

Answer 6

60

Question 7

Normal resting position of scapula

Answer 7

10-20 anterior tilt
10-20 upward rotation
30-45 IR
Between T2-T7

Question 8

Angle of inclination

Answer 8

Shaft of humerus in relation to head/neck

130-150

Question 9

Angle of torsion

Answer 9

Condyles in relation to head/neck

30 retroversion

Question 10

Anteversion

Answer 10

Less ER, more IR

Question 11

Retro version

Answer 11

Increased ER, less IR

Question 12

Movements of SC joint

Answer 12

Elevation/depression, protraction/retraction, posterior rotation

Question 13

Ligaments of SC joint

Answer 13

Interclavicular, A/P sternoclavicular, costoclavicular

Question 14

Function of interclavicular ligament

Answer 14

Prevent depression of lateral clavicle, limit superior translation of medial clavicle

Question 15

Function of A/P sternoclavicular ligament

Answer 15

Medial clavicle protraction and retraction

Question 16

Function of costoclavicular ligament

Answer 16

Resist excessive elevation and facilitates inferior glide
Anterior reduces lateral translation
Posterior reduces medial translation

Question 17

Movements of AC joint

Answer 17

IR/ER, AP tipping, upward/downward rotation

Question 18

Ligaments of AC joint

Answer 18

Superior and inferior AC ligaments, coracoclavicular ligament (conoid and trapezoid)

Question 19

Function of superior and inferior AC ligaments

Answer 19

Approximate the two bones

Superior - limits anterior displacement of distal clavicle

Question 20

Function of both coracoclavicular ligaments

Answer 20

Limit clavicle elevation and assist posterior rotation of clavicle

Question 21

Function of trapezoid

Answer 21

Resist translation in AP direction and medial displacement of scapula

Question 22

Function of conoid

Answer 22

Better resistor to superior movement of clavicle and inferior movements of scapula

Question 23

Movements of scapulothoracic joint

Answer 23

Upward/downward rotation, elevation/depression, protraction/retraction

Question 24

Functions of scapulothoracic joint

Answer 24

Orients glenoid, add range during elevation, good attachment for muscles, control subacromial space

Question 25

Ligaments of glenohumeral joints

Answer 25

Superior glenohumeral, middle glenohumeral, inferior glenohumeral, coracohumeral

Question 26

Function of superior glenohumeral joint

Answer 26

Resist anterior and inferior translation

Question 27

Function of Middle glenohumeral

Answer 27

Resist anterior translation up to midrange

Question 28

Function of inferior glenohumeral

Answer 28

Anterior - helps with external rotation. Resist anterior translation
Posterior - helps with internal rotation. Resist inferior translation
Pouch - resist anterior translation

Question 29

Function of coracohumeral ligament

Answer 29

Assist with inferior trans at rest. Helps with ER and adduction

Question 30

Deltoid EMG activity flexion/abduction

Answer 30

Flexion: continues to increase throughout range
Abduction: increase until 90 degrees then levels off and remains constant

Question 31

Deltoid without scapular stabilizers

Answer 31

Scapula will downwardly rotate

Only 60-70 degrees of elevation

Question 32

Deltoid without rotator cuff

Answer 32

Superior translation of humeral head
Shoulder shrug
Will see sixty degrees of elevation

Question 33

Supraspinatus EMG activity

Answer 33

Increase up to 90 degrees and then plateaus

Greater than deltoid in first 60 degrees of abduction

Question 34

Supraspinatus without deltoid

Answer 34

Full abduction but weak in nature

Question 35

ITS EMG activity

Answer 35

Increases from 0-150 then activity decreases the rest of the way
Activity greater in flexion than abduction because supraspinatus active in abduction