How Much Pressure Breaks a Clavicle?

Lance Fisher/CC-BY-SA 2.0

It takes approximately 7 pounds of pressure to break a human clavicle, or collarbone. The clavicle is made up of a single, long, thin bone, one of two that extends from the shoulder blades to the breastbone. Commonly, the clavicle is broken by falling on the shoulder.