The Journal of Bone and Joint Surgery

Image Quiz
A Rare Fracture Dislocation of the Humeral Head¹
Fig. 1 For larger view, click on image	A fourteen-year-old girl was running across the road when she was struck on her left side by a motor vehicle that was traveling at a speed of approximately 35 mph (56 km/hr). She was thrown about 20 ft (6 m) and landed on her right side. When she was seen in the emergency department, she had pain in the right shoulder and upper extremity and she resisted attempts to move the extremity. The proximal portion of the upper extremity appeared to be foreshortened. There was no neurovascular deficit. The lungs were clear on auscultation. An anteroposterior radiograph of the chest, made with portable equipment, was interpreted as demonstrating a posterior subscapular glenohumeral dislocation with an avulsion fracture of the greater tuberosity (Fig. 1).