Clavicle

The clavicle or collarbone is a slender, doubly-curved long bone over the top of the chest, between the breastbone (sternum) and shoulder blade (scapula). Many muscles of the chest and shoulder attach onto the clavicle which forms the front part of the shoulder girdle. In some people, particularly females who may have less fat in this region, the location of the bone is clearly visible as it creates a bulge in the skin.

The clavicle is easily fractured when the arms are outstretched in a fall. Those who perform strengthening exercises of the shoulder and arm muscles develop larger, stronger clavicles, more resistant to fractures.