The 'light bulb' sign.
Wright
B
B
Accident and Emergency Hospital, London.
Booth
J
J
D000063:Accidents, Traffic; D000328:Adult; D003937:Diagnosis, Differential; D004636:Emergency Service, Hospital; D006801:Humans; D008297:Male; D011859:Radiography; D012783:Shoulder Dislocation / Q000000981:diagnostic imaging*