This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Orthopaedics
Test used for Posterior dislocation of glenohumeral joint 
Select and explain. 
A. Jerk test, B. Fulcrum test, C. Cranks test, D. McMurray's test
A: Jerk test
Answer: A: Jerk test 
Explanation: Test for posterior glenohumeral instability is jerk testMaheswari 5th edition PG 95