Advanced Glenohumeral Joint Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. What is the most common direction of glenohumeral joint dislocation?
- Directly medial
- Posterior
- Superior
- Anterior
Q2. Which arm position commonly predisposes the glenohumeral joint to anterior dislocation?
- Adduction and internal rotation only
- Wrist extension and finger abduction
- Abduction and external rotation
- Elbow flexion and forearm pronation
Q3. Which nerve is particularly vulnerable during an anterior glenohumeral dislocation?
- Median nerve
- Axillary nerve
- Musculocutaneous nerve
- Ulnar nerve
Q4. A Bankart lesion most commonly involves which structure?
- Anteroinferior glenoid labrum
- Coracoclavicular ligament
- Posterior acromion
- Medial border of the scapula
Q5. A Hill-Sachs lesion is a compression defect involving which structure?
- Posterolateral humeral head
- Anterior surface of the acromion
- Inferior angle of the scapula
- Superior surface of the clavicle
Q6. What is a SLAP lesion?
- A tear of the inferior glenohumeral capsule only
- A rupture of the coracoclavicular ligament
- A fracture of the surgical neck of the humerus
- A superior labral tear extending from anterior to posterior
Q7. Which rotator cuff tendon is most commonly involved in degenerative rotator cuff tears?
- Teres major tendon
- Supraspinatus tendon
- Teres minor tendon
- Subscapularis tendon
Q8. What is the main stabilizing action of the rotator cuff during active shoulder movement?
- Locking the clavicle to the first rib
- Compressing and centering the humeral head against the glenoid
- Fixing the scapula permanently to the thoracic wall
- Preventing all rotation of the humerus
Q9. Why is the inferior part of the glenohumeral capsule clinically important in joint instability?
- It is relatively lax and lacks direct rotator cuff reinforcement
- It prevents all abduction of the arm
- It contains the insertion of the deltoid
- It is fused directly to the acromion
Q10. Which description best summarizes glenohumeral joint stability?
- Stability depends on coordinated static soft tissues and dynamic muscular stabilizers
- Stability depends entirely on deep bony congruence
- The joint is stabilized entirely by the acromioclavicular ligament
- Stability is provided only by the deltoid muscle