RT Book, Section A1 Breed, Meghan A1 Fitch, Robert Warne A2 Knoop, Kevin J. A2 Stack, Lawrence B. A2 Storrow, Alan B. A2 Thurman, R. Jason SR Print(0) ID 1181041854 T1 Shoulder Dislocation T2 The Atlas of Emergency Medicine, 5e YR 2021 FD 2021 PB McGraw-Hill PP New York, NY SN 9781260134940 LK accessmedicine.mhmedical.com/content.aspx?aid=1181041854 RD 2023/01/30 AB Anterior dislocations account for more than 90% of dislocations. They are frequently caused by falling with the arm externally rotated and abducted, causing patients to present with the affected extremity held in adduction and internal rotation due to pain. The acromion becomes prominent with loss of the rounded contour of the deltoid. Neurovascular exam of the upper extremity should be performed to rule out associated injury, most commonly of the axillary nerve (sensation over the deltoid) and musculocutaneous nerve (anterolateral forearm). Vascular injuries are rare. Standard radiographs to evaluate for fracture should include AP and either axillary lateral or scapular Y views.