What is the purpose of the clavicle?
The clavicle ( collar bone ) is a long bone , which lies horizontally and along with the shoulder blade makes up the shoulder girdle.
The clavicle keeps the upper limb ( arm ) away from the thorax, by providing a rigid support. This gives the arm a maximum range of movement.
It protects the neuro vascular bundle that supplies the upper limb by covering the cervico axillary canal.
It physically transmits impacts from the upper limbs to the axial skeleton.