Collarbone pain is usually caused by an injury, such as a fracture or joint separation. However, your collarbone, also known as the clavicle, may hurt for other reasons. It can be tender from sleeping ...

During a doubles tennis match, Rick O’Keefe hit a hard serve and returned the ball powerfully when his “collarbone snapped.” “I was playing with three other guys and one of them was a doctor and he’s ...