Clavicle

skeleton · shoulder · bones

S-shaped strut bone. The clavicle is a slender, S-shaped long bone about 6 inches long that connects your shoulder blade to your breastbone, holding your shoulder in the right position.

Named after a key. The word clavicle comes from Latin and means 'little key' because the bone rotates along its axis like a key when you move your shoulder around.

Only horizontal long bone. Your clavicle is the only long bone in your body that lies horizontally across your chest, making it pretty special compared to all your other bones.

Breaks super easily. The clavicle is the most commonly broken bone in the human body because it breaks from falls on outstretched arms or direct hits to your shoulder.