The pectoral girdle on both the side is composed of two bones: clavicle and scapula, only clavicle is connected to the rest of skeleton by a small joint– the sternoclavicular joint. Both bones of girdle are connected together by even smaller joint named as the acromioclavicular joint. The clavicle is connected to the scapula by a strong coracoclavicular ligament (strongest ligament in the upper limb), and the clavicle is anchored to the 1st costal cartilage by the costoclavicular ligament.




Forces of the upper limb are transmitted to the axial skeleton by clavicle via costoclavicular ligament and sternoclavicular joint.