Clavicle Bone Anatomy

• Serving as a strut between the sternum and scapula, the clavicle bone elevates and rotates to maintain the alignment of the scapula, allowing for additional motion when the arm is raised and preventing excessive anterior displacement of the scapula.

• The proximal two-thirds of the clavicle bone is characterized by an anteriorly convex bend. The distal one-third begins to flatten while curving concavely to meet with the scapula. The point at which the clavicle begins to transition from a convex to a concave bend, approximately two-thirds of the way along its shaft, is relatively weak and is a common site for fractures.