what is a clavicula
clavÂ·iÂ·cle. (klav'i-kÄl) [TA] A doubly curved long bone that forms part of the shoulder girdle. Its medial end articulates with the manubrium sterni at the sternoclavicular joint; its lateral end with the acromion of the scapula at the acromioclavicular joint. Synonym(s): clavicula [TA] , collar bone.