21 Questions
Which of the following is the primary movement of the scapula during shoulder abduction?
Upward rotation and external rotation
What is the primary movement of the clavicle during shoulder abduction?
Elevation and posterior rotation
What is the approximate range of glenohumeral joint abduction during full shoulder abduction?
120 degrees
Which of the following is NOT a function of the glenohumeral joint capsule?
Facilitating rotational movements
What is the approximate range of external rotation of the glenohumeral joint during shoulder abduction?
25 degrees
Which of the following is a key principle associated with full shoulder abduction?
The scapula posteriorly tilts and externally rotates
Which ligament restrains external rotation at 90 degrees of abduction?
Anterior band IGHLC
What muscle is an effective restraint to external rotation with the arm at the side?
Subscapularis
In which plane do the deltoid and inferior rotator cuff act as force couples?
Coronal
What muscle helps reduce strain on the anterior band of IGHLC?
Teres Minor
What effect does the long head of biceps tendon have on external rotation?
No effect on strain of IGHLC
Which muscle assists the deltoid in abduction?
Supraspinatus
What is the approximate angle of the scapular plane relative to the frontal plane?
35 degrees anterior
What is the approximate angle of humeral head retroversion relative to the medial-lateral axis at the elbow?
30 degrees
What is the primary function of the shoulder girdle?
To position the hand in space for activities of daily living
What is the main role of the rotator cuff muscles in dynamic shoulder stabilization?
They form a cuff that protects and actively stabilizes the glenohumeral joint
Which of the following is NOT a primary motion of the glenohumeral joint?
Horizontal abduction
How does the scapulothoracic posture affect the static stability of the glenohumeral joint?
An upwardly rotated scapula reduces the angle between the superior capsular structures and gravity
What is the primary role of the glenoid labrum in the glenohumeral joint?
It increases the depth of the glenoid fossa by about 50%
What is the primary function of the coracoacromial arch in the subacromial space?
It contains the subacromial bursa and protects the supraspinatus tendon
What is the primary role of the superior capsular structures (SCS) in maintaining glenohumeral joint stability?
They provide the primary ligamentous support for the humeral head
Test your knowledge on the pairing of shoulder joint and shoulder girdle movements according to JOSPT 1996. This quiz covers movements such as shoulder joint abduction, scapula adduction, upward rotation, external rotation, and more.
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