Clavicle Bone - Location, Definition & Function - Human Anatomy | Kenhub

Recent questions

• What is a clavicle?

  The clavicle, commonly known as the collarbone, is a short, curved long bone situated at the base of the neck. It connects the sternum to the acromion of the scapula, with one clavicle on each side of the body. This bone plays a crucial role in the skeletal system by serving as a strut that helps stabilize the shoulder and allows for a wide range of arm movements. Its unique shape and position make it an essential component in the anatomy of the upper body.

• Why is the clavicle important?

  The clavicle is important for several reasons. It acts as a critical connector between the upper limb and the trunk, facilitating the transfer of forces from the arm to the axial skeleton. This function is vital for activities that involve lifting or pushing. Additionally, the clavicle protects underlying neurovascular structures, which are essential for arm function. Its role in maintaining shoulder stability and mobility makes it a key bone in the human body, contributing to overall upper body mechanics.

• What causes clavicle fractures?

  Clavicle fractures are most commonly caused by falls, direct blows to the shoulder, or accidents during sports activities. The clavicle's location and its function as a shock absorber make it particularly susceptible to fractures. When a force is applied to the shoulder, the clavicle can break due to its relatively thin structure and the stress it endures. This type of injury is prevalent, especially among athletes and individuals engaged in high-impact activities, highlighting the need for protective measures during such events.

• How does the clavicle connect to other bones?

  The clavicle connects to other bones through its articulation with the sternum at one end and the acromion of the scapula at the other. This dual connection allows the clavicle to serve as a bridge between the upper limb and the trunk. The sternoclavicular joint, where the clavicle meets the sternum, is a pivotal point that enables movement and stability of the shoulder girdle. Meanwhile, the acromioclavicular joint, where the clavicle meets the acromion, allows for additional mobility and flexibility in arm movements, making the clavicle integral to upper body function.

• What are the landmarks of the clavicle?

  The clavicle features several important landmarks on its inferior surface, which include the conoid tubercle and the trapezoid line near the acromial end. These structures serve as attachment points for ligaments that stabilize the shoulder. Additionally, the impression for the costoclavicular ligament at the sternal end is another significant landmark, providing support and stability to the clavicle as it connects to the first rib. Understanding these landmarks is essential for medical professionals and students studying human anatomy, as they play a crucial role in the function and stability of the shoulder girdle.