The clavicle is the long, thin bone at the top of the chest between the sternum and shoulder. Its function is to connect the upper limb to the chest and shoulders aligned maintain. It contains various muscles (deltoids and trapezoid on the top face and subclavian muscle, ligament and ligament conoid trapezoid on the bottom) are inserted. It is one of the long bones which has more variation: sometimes it is pierced by a branch of the supraclavicular nerve; in manual workers it is thicker and curve and muscle attachment sites are more pronounced; also the right clavicle is more robust than the left and usually shorter. A broken collarbone is a common injury in children and adolescents, as these bones do not harden into adulthood. Among collarbone injuries we are also dislocation clavicle or acromioclavicular dislocation.