Chest · Long bone
Clavicle (Collarbone)
The clavicle, or collarbone, is the S-shaped bone at the top of the chest connecting the arm to the body. It is one of the most commonly broken bones, especially in falls and sport.
What it is
The clavicle is a slender, S-shaped bone that runs horizontally between the breastbone and the shoulder blade, forming a strut that holds the shoulder out from the body.
Where it is
At the top of the chest, running from the breastbone (sternum) to the shoulder blade (scapula) on each side.
What it does
Acts as a strut connecting the arm to the trunk, transmits force from the arm to the skeleton, and protects nearby nerves and blood vessels.
Connections
Joints and connections
- Sternoclavicular joint (with the sternum)
- Acromioclavicular joint (with the scapula)
When things go wrong
Common injuries and conditions
- Clavicle fracture (very common, from falls onto the shoulder or outstretched arm)
- Acromioclavicular joint injury ("separated shoulder")
Education and reference only. This explains the anatomy in plain terms; it is not a diagnosis. A severe injury, a visibly deformed limb, or the inability to move or bear weight needs urgent assessment — call 999 or go to A&E for a serious injury.
Did you know?
An interesting fact
The clavicle is the first bone to start forming in the developing embryo — and one of the last to finish maturing in early adulthood.
Answers
Clavicle: frequently asked questions
What is the collarbone?
The collarbone (clavicle) is the S-shaped bone at the top of the chest that connects the arm to the body and holds the shoulder out to the side.
How is a broken collarbone treated?
Most broken collarbones heal with a sling and time, though some need surgery. The right treatment is decided by a clinician after examination and an X-ray.
Explore the chest
Related bones
Sources
Where this is drawn from
- NHS — Anatomy and body systems
- Gray's Anatomy for Students (Drake, Vogl, Mitchell)
- TeachMeAnatomy — skeletal system
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