This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Posterior glenohumeral instability can be tested by which of the following tests? 
Select and explain. 
A. Crank Test, B. Fulcrum Test, C. Jerk Test, D. Sulcus Test
C: Jerk Test
Answer: C: Jerk Test 
Explanation: Apprehension Test (Crank Test) and Fulcrum Test is used for Anterior shoulder instability Sulcus Test is used for Inferior shoulder instability and Jerk Test is for Posterior shoulder instability