The clavicle acts as a strut for the shoulder, allowing the arm to move away from the body. It also serves as attachment for many muscles of the upper body including the pectoralis major, the deltoid and the trapezius muscles.
Beyond its mechanical duties, the clavicle also protects important nerves and blood vessels. Just beneath the clavicle lie neurovascular structures which supply the upper limb.
Lastly, the clavicle creates a collar for our necklines. As it lies just below the surface of the skin, the contour of the clavicle is highly visible. Its unique curvature and shape make it a very attractive feature of the upper chest.