Clavicle

Clavicula

SkeletalSkeletonThoraxLeft and right

View left in 3D View right in 3D

What it is
The collarbone: an S-shaped strut, convex forward in its medial two-thirds and concave forward laterally, between the sternum and the acromion.
Function
Holds the shoulder out from the trunk so the arm can swing freely and transmits forces from the arm to the axial skeleton.
Size
≈ 15 cm long, 1–2 cm thick
Clinical note
The most frequently fractured bone, usually at the junction of its middle and lateral thirds after a fall on the outstretched hand.