Snapshot A 27-year-old G1P1 woman with a newborn boy is evaluated on the labor and delivery floor for left shoulder pain. She had a seizure secondary to eclampsia 30 minutes prior to evaluation. On exam, her left arm is adducted and internally rotated. Her range of motion is limited due to pain. An axillary lateral radiograph demonstrates a posterior shoulder dislocation. Introduction Clinical definition login to view 4 more bullets Epidemiology Incidence login to view 4 more bullets Risk factors login to view 2 more bullets Etiology Tetanic muscle contractions pull humerus posteriorly out of glenoid login to view 2 more bullets Pathoanatomy login to view 9 more bullets Associated conditions login to view 4 more bullets Presentation Symptoms login to view 3 more bullets Physical exam login to view 3 more bullets Imaging Radiographs login to view 10 more bullets Differential Anterior shoulder dislocation login to view 3 more bullets Rotator cuff tear login to view 3 more bullets Treatment Nonoperative login to view 3 more bullets Complications Nerve injury login to view 1 more bullet Recurrence Prognosis Unfavorable login to view 1 more bullet