Bilateral shoulder dislocations are a rare occurrence. 1-6 The two humeral heads dislocate from the scapular glenoid fossa in the same direction (bilateral symmetric shoulder dislocations or BSSD) or in different directions (bilateral asymmetric shoulder dislocations or BASD). There are three subtypes of BSSD (posterior, 1,2 anterior, 3 and inferior 4). BASD are classified as anteroposterior (one side anterior and the other side posterior) 5 or anteroinferior (one side anterior and the other side inferior). 6 Dislocations are acute or recent when recognized in the 21 days from the trauma. After 21 days, dislocations are called chronic or old. Bilateral symmetric posterior shoulder dislocations are the most common type since Cooper in 1839 1 and Myenter in 1902 2 reported the first cases. The literature found less commonly bilateral symmetric anterior shoulder dislocations (BSASD). 7 We report two cases of BSASD, one acute and one chronic case, both after epileptic seizures. We discuss the epidemiology, etiology, mechanism of injury, treatment, and outcome features through an extensive literature review of 133 BSASD reported cases. 3,7-118 2 | CASE HISTORY 2.1 | Case 1 A 30-year-old male patient complained of bilateral shoulder pain at our ED. The patient woke up at night on the ground, a few minutes after falling from bed, but with no recollection of the fall. He had no prior history of epilepsy nor diabetes. An inaugural epileptic grand mal seizure was suspected. At admission, he presented with bilateral shoulder sulcus signs with an inability to rotate his arm internally (Figure 1). The neurovascular status was normal at both shoulders. Bilateral shoulder AP and Bloom-Obata views revealed bilateral subcoracoid anteromedial glenohumeral dislocation without associated fracture (Figure 2). Closed reduction of both shoulders was performed under general anesthesia. With the patient in the supine position,
