<prompt> Which of the following is test of posterior glenohumeral instability:Fulcrum testSulcus testJerk testCrank test  <response>: Posterior Instability Adduction and internal rotation force Jerk provocative test Posterior apprehension test Posterior clunk test Push-Pull test Anterior Instability Tests Fulcrum test Crank test Surprise test most accurate Jobe relocation test 