JOSPT 1996 Pairing Shoulder Joint and Shoulder Girdle Movements Quiz
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Questions and Answers

Which of the following is the primary movement of the scapula during shoulder abduction?

  • Upward rotation and external rotation (correct)
  • Retraction and external rotation
  • Downward rotation and internal rotation
  • Protraction and internal rotation

What is the primary movement of the clavicle during shoulder abduction?

  • Retraction and anterior rotation
  • Protraction and posterior rotation
  • Elevation and posterior rotation (correct)
  • Depression and anterior rotation

What is the approximate range of glenohumeral joint abduction during full shoulder abduction?

  • 150 degrees
  • 180 degrees
  • 120 degrees (correct)
  • 90 degrees

Which of the following is NOT a function of the glenohumeral joint capsule?

<p>Facilitating rotational movements (B)</p> Signup and view all the answers

What is the approximate range of external rotation of the glenohumeral joint during shoulder abduction?

<p>25 degrees (D)</p> Signup and view all the answers

Which of the following is a key principle associated with full shoulder abduction?

<p>The scapula posteriorly tilts and externally rotates (B)</p> Signup and view all the answers

Which ligament restrains external rotation at 90 degrees of abduction?

<p>Anterior band IGHLC (C)</p> Signup and view all the answers

What muscle is an effective restraint to external rotation with the arm at the side?

<p>Subscapularis (C)</p> Signup and view all the answers

In which plane do the deltoid and inferior rotator cuff act as force couples?

<p>Coronal (B)</p> Signup and view all the answers

What muscle helps reduce strain on the anterior band of IGHLC?

<p>Teres Minor (D)</p> Signup and view all the answers

What effect does the long head of biceps tendon have on external rotation?

<p>No effect on strain of IGHLC (A)</p> Signup and view all the answers

Which muscle assists the deltoid in abduction?

<p>Supraspinatus (C)</p> Signup and view all the answers

What is the approximate angle of the scapular plane relative to the frontal plane?

<p>35 degrees anterior (A)</p> Signup and view all the answers

What is the approximate angle of humeral head retroversion relative to the medial-lateral axis at the elbow?

<p>30 degrees (C)</p> Signup and view all the answers

What is the primary function of the shoulder girdle?

<p>To position the hand in space for activities of daily living (B)</p> Signup and view all the answers

What is the main role of the rotator cuff muscles in dynamic shoulder stabilization?

<p>They form a cuff that protects and actively stabilizes the glenohumeral joint (B)</p> Signup and view all the answers

Which of the following is NOT a primary motion of the glenohumeral joint?

<p>Horizontal abduction (A)</p> Signup and view all the answers

How does the scapulothoracic posture affect the static stability of the glenohumeral joint?

<p>An upwardly rotated scapula reduces the angle between the superior capsular structures and gravity (C)</p> Signup and view all the answers

What is the primary role of the glenoid labrum in the glenohumeral joint?

<p>It increases the depth of the glenoid fossa by about 50% (C)</p> Signup and view all the answers

What is the primary function of the coracoacromial arch in the subacromial space?

<p>It contains the subacromial bursa and protects the supraspinatus tendon (D)</p> Signup and view all the answers

What is the primary role of the superior capsular structures (SCS) in maintaining glenohumeral joint stability?

<p>They provide the primary ligamentous support for the humeral head (A)</p> Signup and view all the answers
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