Symptomatic anterior sternoclavicular joint secondary to a bicipital rib.

This case report details the diagnosis and treatment of a previously unreported complication of a congenital chest wall anomaly. Our patient presented with a painful anterior sternoclavicular joint subluxation secondary to a bicipital rib. Thoracic magnetic resonance and computed tomographic imaging provided the diagnosis. Complete resolution of symptoms was achieved after resection of the bicipital rib.