The Shoulder: How Much Do You Know About Shoulder Pain?

1.
- A.
  
  Tendons
- B.
  
  Ligaments
- C.
  
  Bursae
- D.
  
  Muscles
Correct Answer
A. Tendons
2.

Limited lateral rotation of the shoulder can be an indicator of:
- A.
  
  Both arthritis and bursitis
- B.
  
  Arthritis only
- C.
  
  Bursitis only
Correct Answer
A. Both arthritis and bursitis

Explanation
Limited lateral rotation of the shoulder can be an indicator of both arthritis and bursitis. Arthritis is a condition that causes inflammation and stiffness in the joints, which can restrict movement and lead to limited rotation of the shoulder. Bursitis, on the other hand, is the inflammation of the bursae, which are small fluid-filled sacs that cushion the joints. When the bursae in the shoulder become inflamed, it can cause pain and limited range of motion, including limited lateral rotation. Therefore, the presence of limited lateral rotation in the shoulder can suggest both arthritis and bursitis as potential underlying conditions.

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3.
- A.
  
  Subscapularis
- B.
  
  Supraspinatus
- C.
  
  Infraspinatus
- D.
  
  Biceps
Correct Answer
A. Subscapularis
4.
- A.
  
  Supraspinatus
- B.
  
  Subscapularis
- C.
  
  Infraspinatus
- D.
  
  Biceps
Correct Answer
A. Supraspinatus
5.

Throwing a ball overhead uses primarily what muscle?
- A.
  
  Infraspinatus
- B.
  
  Supraspinatus
- C.
  
  Subscapularis
- D.
  
  Biceps
Correct Answer
C. Subscapularis

Explanation
The subscapularis muscle is primarily responsible for throwing a ball overhead. It is one of the four rotator cuff muscles located in the shoulder joint. The subscapularis muscle helps to internally rotate the arm and stabilize the shoulder joint during overhead movements like throwing. It plays a crucial role in generating power and control during the throwing motion, making it the correct answer for this question.

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6.
- A.
  
  Supraspinatus
- B.
  
  Biceps
- C.
  
  Subscapularis
- D.
  
  Infraspinatus
Correct Answer
C. Subscapularis
7.

Which movement is most painful when a client has an acromio-clavicular ligament sprain.
- A.
  
  Passive horizontal adduction
- B.
  
  Passive elevation
- C.
  
  Passive lateral rotation
- D.
  
  Passive medial rotation
Correct Answer
A. Passive horizontal adduction

Explanation
Passive horizontal adduction is the most painful movement when a client has an acromio-clavicular ligament sprain. This is because the acromio-clavicular ligament is responsible for stabilizing the joint between the acromion process of the scapula and the clavicle. When this ligament is sprained, any movement that involves bringing the arm across the body, such as horizontal adduction, puts stress on the injured ligament and causes pain.

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8.

How many degrees of motion are there at the glenohumeral joint?
- A.
  
  90
- B.
  
  180
- C.
  
  270
- D.
  
  360
Correct Answer
A. 90

Explanation
The glenohumeral joint is a ball-and-socket joint that connects the upper arm bone (humerus) to the shoulder blade (scapula). It allows for a wide range of motion in the shoulder. The correct answer is 90 degrees because the glenohumeral joint primarily allows for flexion and extension, which is movement in the sagittal plane. Other movements such as abduction, adduction, and rotation also occur at the glenohumeral joint, but they are not included in the given answer options.

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9.
- A.
  
  At the tenoperiosteal junction
- B.
  
  In the muscle belly
- C.
  
  In the tendon body
- D.
  
  At the musculotendinous junction
Correct Answer
A. At the tenoperiosteal junction
10.
- A.
  
  Infraspinatus muscle-tendon unit strain
- B.
  
  Bursitis
- C.
  
  AC joint sprain
- D.
  
  Supraspinatus muscle-tendon unit strain
Correct Answer
D. Supraspinatus muscle-tendon unit strain

The Shoulder: How Much Do You Know About Shoulder Pain?

Limited lateral rotation of the shoulder can be an indicator of:

Throwing a ball overhead uses primarily what muscle?

Which movement is most painful when a client has an acromio-clavicular ligament sprain.

How many degrees of motion are there at the glenohumeral joint?