Posterior glenohumeral instability is tested by
Answer: b) Jerk testSulcus Sign. Downward traction is applied to the arm while the shoulder is held in 0 degrees of abduction, neutral rotation, and 0 degrees of flexion/extension. The acromiohumeral interval is measured to assess inferior glenohumeral laxity.Rotator Interval Test. While performing the sulcus test, externally rotate the arm. Healthy patients will have a reduction of inferior translation. No reduction in acromiohumeral interval is suspicious for rotator interval capsular deficiency.Jerk Test. Start with the arm forward-flexed and adducted. Posterior-directed force will cause posterior translation in posterior instability. Moving the arm into the coronal plane may reduce the humeral head.
Crank test
Jerk test
Sulcus test
Fulcrum test
Injuries Around Shoulder