The lesion is associated with anterior shoulder dislocation. When the humerus is driven from the glenoid cavity, its relatively soft head impacts against the anterior edge of the glenoid. The result is a divot or flattening in the posterolateral aspect of the humeral head, usually opposite the coracoid process. The mechanism which leads to shoulder dislocation is usually traumatic but can vary, especially if there is history of previous dislocations. Sports, falls, seizures, assaults, throwing, reaching, pulling on the arm, or turning over in bed can all be causes of anterior dislocation.
Hill–Sachs lesion
Olney's lesions
Janeway lesion
Bankart lesion
Rokitansky nodule
Elschnig spots
Cameron lesions
Butcher's wart