O'Brien Test (Active Compression Test)

Name: O'Brien Test (Active Compression Test)
Uploaded: 2023-09-25T11:05:24+00:00
Description: The patient is seated or standing. Patient’s arms at 90 degrees of flexion with elbows fully extended, forearms in full pronation. Examiner presses down the arms while standing in front, patient is asked to resist the pressure

Testing position: The patient is seated or standing. Patient’s arms at 90 degrees of flexion with elbows fully extended, forearms in full pronation. Examiner presses down the arms while standing in front, patient is asked to resist the pressure. Same is repeated with the patient’s forearms in supination.
Expected Findings: Tightening the posterior capsule, posterior translation of the humeral head, and stressing the labrum that results in pain and weakness.