Traumatic posterior shoulder dislocation with associated acromion fracture: a report of 2 cases

Traumatic posterior shoulder dislocations are rare, comprising 2% to 5% of all shoulder dislocations. They typically result from high-energy trauma, such as sports injuries, motor vehicle accidents, or seizures.13 Associated injuries, including glenoid and/or humeral fractures or rotator cuff tears, occur in up to 65% of cases.9,12