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</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</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</p> Signup and view all the answers

    Which ligament restrains external rotation at 90 degrees of abduction?

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

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

    <p>Subscapularis</p> Signup and view all the answers

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

    <p>Coronal</p> Signup and view all the answers

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

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

    Which muscle assists the deltoid in abduction?

    <p>Supraspinatus</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</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</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</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</p> Signup and view all the answers

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

    <p>Horizontal abduction</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</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%</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</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</p> Signup and view all the answers

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