The clavicle, commonly known as the collarbone, is a slender, S-shaped bone located between the sternum (breastbone) and the scapula (shoulder blade). It plays a crucial role in connecting the arm to the body and helps stabilize the shoulder. The clavicle also serves as a protective barrier for important nerves and blood vessels that run from the neck to the arm. In humans, the clavicle is one of the most frequently fractured bones due to its position and exposure. It is essential for a wide range of arm movements, making it vital for activities such as lifting, reaching, and throwing. Proper function of the clavicle is important for overall shoulder health.