MS-3246

MS-3246

A high school football player comes to the emergency department after a hard tackle. He complains of pain in the front of his shoulder, limited movement in his affected arm, and notices that his collarbone is protruding outward. An X-ray shows that his clavicle is displaced, particularly at the lateral end, but still intact. The medial end of the clavicle is still in contact with the sternum, and there are no other bone abnormalities. Given the extent of the dislocation, you suspect that multiple ligaments have been torn. Which of the following ligaments is the least likely to be affected?