A 15-Year-Old Girl, While Demonstrating to Her Friends Her Proficiency

A 15-year-old girl, while demonstrating to her friends her proficiency at standing on her hands, suddenly went off balance and put all her body weight on her left outstretched hand. A distinctive cracking noise was heard, and she felt a sudden pain in her left shoulder region. On examination in the emergency department, the smooth contour of her left shoulder was absent. The clavicle was obviously fractured, and the edges of the bony fragments could be palpated.
-The following statements concerning this case are correct except which?

A) The clavicle is one of the most common bones in the body to be fractured.
B) Anatomically, the weakest part of the clavicle is the junction of the medial and middle thirds, and this is where the fracture commonly occurs.
C) The lateral bony fragment is depressed downward by the weight of the arm.
D) The lateral fragment is pulled forward and medially by the pectoral muscles.
E) The medial fragment is elevated by the sternocleidomastoid muscle.
F) The supraclavicular nerves or a communicating vein between the cephalic and internal jugular vein may be damaged by the bone fragments.