Intermediate Sternoclavicular Joint Quiz

Q1. The sternoclavicular articular disc is attached superiorly to which structure?

• Body of the sternum
• Coracoid process
• Medial end of the clavicle
• Acromion

Q2. The inferior attachment of the sternoclavicular articular disc is associated with which structure?

• First costal cartilage
• Coracoid process
• Acromion
• Second rib

Q3. What is an important mechanical function of the articular disc in the sternoclavicular joint?

• It forms the insertion of the deltoid muscle
• It improves congruence and helps absorb transmitted forces
• It connects the humerus directly to the sternum
• It prevents all clavicular rotation

Q4. Which ligament is an important restraint to excessive elevation of the clavicle?

• Transverse humeral ligament
• Annular ligament
• Costoclavicular ligament
• Coracoacromial ligament

Q5. Which ligament helps limit excessive depression of the clavicle?

• Interclavicular ligament
• Radial collateral ligament
• Coracoacromial ligament
• Coracoclavicular ligament

Q6. What happens to the clavicle at the sternoclavicular joint during full elevation of the upper limb?

• It rotates anteriorly without elevation
• It undergoes pronation
• It undergoes posterior axial rotation
• It becomes fixed to the first rib

Q7. Which end of the clavicle undergoes the greatest visible displacement during movement at the sternoclavicular joint?

• Lateral end
• Medial end
• Both ends remain stationary
• Only the middle third moves

Q8. Which statement best describes the relationship between sternoclavicular motion and scapular elevation?

• Scapular elevation requires the clavicle to remain completely fixed
• Scapular elevation requires distal radioulnar rotation
• Scapular elevation is accompanied by elevation of the clavicle
• Scapular elevation occurs only through the glenohumeral joint

Q9. Which structure contributes substantially to the strong stability of the sternoclavicular joint despite the limited congruence of its bony surfaces?

• Articular disc and strong ligamentous support
• Rotator cuff tendons surrounding the joint
• A fibrocartilaginous labrum surrounding the clavicle
• Deep interlocking of the clavicle within the manubrium

Q10. Why must movement at the sternoclavicular joint accompany many movements of the scapula?

• The first rib rotates directly with the scapula
• The clavicle links the moving scapula to the axial skeleton
• The humerus is fused to the clavicle
• The scapula articulates directly with the sternum