Which of the following best describes the structure of the glenohumeral (GH)joint?
A) The joint surfaces of the GH joint are naturally congruent and stable.
B) The glenoid labrum enhances the depth of the glenoid fossa.
C) The glenoid fossa,by itself,is three times larger than the humeral with which it articulates.
D) The glenoid labrum is a thin hyaline cartilage structure.

Question

Quizplus · Accepted Answer

The glenoid labrum is a fibrocartilaginous rim around the edge of the glenoid fossa that enhances the depth of the joint cavity and stabilizes the glenohumeral joint.

Answer: C 
 The glenoid fossa is smaller than the humeral head, and it is only about one-third of the size of the humeral head. This is one reason why the GH joint is prone to dislocation.

Therefore, the most accurate answer is a combination of choices B and C.

Which of the Following Best Describes the Structure of the Glenohumeral