<Li> Referred pain: dull to extreme ache in and around clavicle area, including surrounding muscles </Li> <Li> Possible nausea, dizziness, and / or spotty vision due to extreme pain </Li> <P> Clavicle fractures are commonly known as a breaking of the collarbone, and they are usually a result of injury or trauma . The most common type of fracture occurs when a person falls horizontally on the shoulder or with an outstretched hand . A direct hit to the collarbone can also cause a break . In most cases, the direct hit occurs from the lateral side towards the medial side of the bone . The muscles involved in clavicle fractures include the deltoid, trapezius, subclavius, sternocleidomastoid, sternohyoid, and pectoralis major muscles . The ligaments involved include the conoid ligament and trapezoid ligament . Incidents that may lead to a clavicle fracture include automobile accidents, biking accidents (especially common in mountain biking), horizontal falls on the shoulder joint, or contact sports such as football, rugby, hurling, or wrestling . </P> <P> The clavicle is the bone that connects the trunk of the body to the arm, and it is located directly above the first rib . A clavicle is located on each side of the front, upper part of the chest . The clavicle consists of a medial end, a shaft, and a lateral end . The medial end connects with the manubrium of the sternum and gives attachments to the fibrous capsule of the sternoclavicular joint, articular disc, and interclavicular ligament . The lateral end connects at the acromion of the scapula which is referred to as the acromioclavicular joint . The clavicle forms a slight S - shaped curve where it curves from the sternal end laterally and anteriorly for near half its length, then forming a posterior curve to the acromion of the scapula . </P>

Why is the clavicle the most broken bone
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