Usually a history of a direct blow on the front of the shoulder, or forced internal rotation of the abducted arm.
On examination, the shoulder has an abnormal contour, with a bulge posteriorly. Invariably the shoulder is locked in full internal rotation - virtually pathognomonic for this condition.
Radiography shows the characteristic lightbulb sign on AP view; an axillary lateral view is needed to actually view the dislocation.
Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.