Intrathoracic displacement of the scapula is a rare injury, with only five cases reported in the literature. They usually occur following high-energy accidents, often involving a motor vehicle. We report a case of a 50-year-old woman who presented with symptoms of subacromial impingement 31 years ago after a road traffic accident, which resulted in multiple fractures and malunion of the fourth and fifth ribs posteriorly; this incident resulted in displacement of the inferior tip of the scapula between the malunited ribs. Scapula-thoracic dyskinesis as a result of this injury led to symptoms of subacromial impingement.
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