Clavicle (Collarbone)
Anatomical overview of the clavicle, its structure, function, and clinical importance.
Introduction
The clavicle, commonly known as the collarbone, is a long, S-shaped bone located horizontally at the top of the chest. It connects the sternum (breastbone) to the scapula (shoulder blade).
Anatomy of the Clavicle
- Shape: S-shaped with convex and concave curves
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Parts:
- Medial (sternal) end: articulates with the sternum
- Lateral (acromial) end: articulates with the scapula
- Body (shaft): the central curved part
- Features: Conoid tubercle, trapezoid line, nutrient foramina
Functions of the Clavicle
- Serves as a strut to keep the shoulder away from the thorax
- Protects neurovascular structures passing beneath it
- Provides attachment sites for muscles such as the deltoid and trapezius
- Facilitates shoulder movement and stability
Clinical Significance
- Fractures: Common injury, especially in falls or trauma
- Dislocations: Rare but can occur at the acromioclavicular joint
- Bone tumors or infections: Uncommon but possible
- Importance in surgeries and reconstructive procedures
Imaging and Diagnosis
X-rays are commonly used to diagnose clavicle fractures and dislocations. The clavicle's superficial location makes it easily visible on radiographs.
Conclusion
The clavicle is a vital bone in the skeletal system, contributing to shoulder mobility, protection of neurovascular structures, and overall upper limb function. Its fractures are among the most common bones injuries in the body.
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