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To the naval medical officer on recruiting duty there come men with numerous physical defects, but rarely does it happen that a maldevelopment of real interest comes under his observation.
Recently there came to the navy recruiting station here a youth, aged 22, desiring to enlist in the navy as apprentice seaman, who, before removing his clothing, showed nothing abnormal; and even when he presented himself nude for the physical examination, the only abnormality noticed was a slight prominence of the clavicles about one-third way from the sternal end. On palpation it was discovered that the clavicles were rudimentary and extended only a short way from the sternum. There was apparently a slight ligamentous connection between the ends of the clavicles and the acromion process, but the fingers could be inserted behind the ends of the clavicles and they could be drawn forward without discomfort
Boland M. A CASE OF RUDIMENTARY CLAVICLES. JAMA. 1912;LVIII(19):1442. doi:10.1001/jama.1912.04260050118013