[Posterior shoulder dislocation; an often-missed diagnosis]

Posterior shoulder dislocation after a traumatic event is often underdiagnosed. Consequently, treatment is initiated too late and patients experience pain and loss of motion. Conventional X-ray is the standard to diagnose a posterior shoulder dislocation. If symptoms persist, a CT scan should be performed. We describe two patients with chronic posterior shoulder dislocation. Each patient received different treatment due to the duration of the posterior dislocation and the age of the patient. The purpose of this report is to highlight the importance of early recognition and diagnosis of a posterior shoulder dislocation, and the need for clinicians to consider this condition and treat it correctly.