Week 4

Question 1

What is the shoulder complex comprised of?

Answer 1

Scapula
Ribs
Clavicle
Sternum
Humerus

Question 2

What is the shoulder girdle comprised of?

Answer 2

Scapula
Humerus
Clavicle

Question 3

What are the main joints of the shoulder?

Answer 3

Sternoclavicular
Acromioclavicular
Glenohumeral

Question 4

What type of joint is the sternoclavicular joint?

Answer 4

Saddle Joint

Question 5

What type of joint is the acromioclavicular joint?

Answer 5

Plane Synovial Joint

Question 6

What type of joint is the glenohumeral joint?

Answer 6

Ball-and-Socket Joint

Question 7

What are the four primary motions of the scapula movement?

Answer 7

Elevation
Depression
Adduction
Abduction

Upward Rotation and Downward Rotation are secondary motions

Question 8

What does elevation of the scapula look like?

Answer 8

Lifting the shoulders up

• Levator Scapula, Upper Trapezius*
• Shrugging motion*

Question 9

What does depression of the scapula look like?

Answer 9

Move shoulders down

Lower Trapezius

Question 10

What does adduction of the scapula look like?

Answer 10

Move shoulder back

• Middle trapezius, Rhomboid*
• Pretend to hold a pencil between your shoulder blades*

Question 11

What does abduction(protraction) of the scapula look like?

Answer 11

Move shoulders forward or towards the midline

Serratus Anterior, Pectoralis Minor

Question 12

What does upward rotation of the scapula look like?

Answer 12

Arms to the sky

Upper and Middle Traps

Question 13

What does downward rotation of the scapula look like?

Answer 13

Arms down and return to the anatomical position

Rhomboids

Question 14

The clavicle rotates in…

A. One degree of freedom
B. Two degrees of freedom
C. Three degrees of freedom

Answer 14

C. Three degrees of freedom

Question 15

Glenohumeral Joint

Answer 15

Incongruous joint because the articulating surfaces are not in direct contact

60-120 degrees of motion

Question 16

What are the muscles that move the shoulder?

Answer 16

Deltoid
Pectoralis Major
Latissimus Dorsi
Teres Major
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

Question 17

What are the rotator cuff muscles?

Answer 17

SITS
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

Question 18

Name these parts of the body

Answer 18

Question 19

Name these parts of the body

Answer 19

Question 20

What action does the deltoid perform anteriorly?

Answer 20

Anterior: flexion, internal rotation, horizontal abduction, adduction, abduction

Question 21

What is the middle action the deltoid performs?

Answer 21

Middle: Abduction

Question 22

What action does the deltoid perform posteriorly?

Answer 22

Posterior: extension, external rotation, horizontal abduction

Question 23

What action does the clavicle portion of the pectoralis major perform?

Answer 23

Shoulder flexion to 90 degrees

Question 24

What action does the sternal portion b (lower portion) of the pectoralis major perform?

Answer 24

Shoulder extension to 90 degrees

Question 25

What action does the clavicle portion a and sternal portion b of the pectoralis major perform?

Answer 25

Shoulder adduction, internal rotation, horizontal adduction

Question 26

What action does the latissimus dorsi perform?

Answer 26

Shoulder extension, adduction, internal rotation, and hyperextension

Question 27

What action does the teres major perform?

Answer 27

shoulder extension, adduction, internal rotation

Question 28

What action does the supraspinatus perform?

Answer 28

Shoulder abduction

Question 29

What action does the infraspinatus perform?

Answer 29

Shoulder external rotation, horizontal abduction

Question 30

What action does the teres minor perform?

Answer 30

Shoulder external rotation, horizontal abduction

Question 31

What action does the subscapularis perform?

Answer 31

Shoulder; internal rotation

Question 32

True/False

The supraspinatus is most frequently involved in rotator cuff tears.

Answer 32

True

This is due to it’s superior location and mechanical abrasion and impingement of the supraspinatus on the acromion bone

Question 33

Bursitis

Answer 33

When the bursa gets inflamed filling up the joint space where the tendons glide through

Question 34

Bursae

Answer 34

Provides cushion so soft tissue glide and there is less friction

Question 35

Concurrent Force Systems

Answer 35

Exists when two or more forces act at a common point of application but in divergent directions

Ex.) Pectoralis major and Deltoid

Question 36

First Kinematic Principle of Abduction

Answer 36

Generalized 2:1 scapulohumeral rhythm, active shoulder abduction of about 180 degrees occurs as a result of simultaneous 120 degrees of glenohumeral joint abduction and 60 degrees of scapulothoracic upward rotation

Question 37

Sixth Kinematic Principle of Abduction

Answer 37

States that the GH joint externally rotates during abduction

if it were to stay in internal rotation it would impinge on the rotator cuff tendons

Question 38

What affects shoulder instability?

Answer 38

Glenohumeral subluxation

Question 39

True/False

Anterior dislocation is less common than posterior dislocation.

Answer 39

False

Anterior dislocation is more common than posterior dislocation.

Question 40

Impingement

Answer 40

When nerves and tendons are impinged by other structures in the joint

Question 41

• *Signs and symptoms of a torn or inflamed**
• *rotator cuff**

Answer 41

Pain (especially at night)
Weakness and restricted movement
Lack of active overhead movements

Question 42

A labral tear could be reported as

A. An overhead injury
B. Limitation in strength and ROM
C. Clicking with motion
D. Pain with Activity
E. All of the above

Answer 42

E. All of the above

Question 43

True/False

Adhesive Capsulitis (frozen shoulder) usually affects women more than men.

Answer 43

True