Costoclavicular

Costoclavicular is a term used in anatomy to describe the relationship between the clavicle (collarbone) and the ribs (costae). The costoclavicular ligament is a strong ligament in the human body that connects the clavicle with the first rib. This ligament plays a crucial role in maintaining the stability of the shoulder girdle.

Anatomy

The costoclavicular ligament is a short, flat, rhomboid ligament which connects the inferior surface of the medial end of the clavicle with the first rib and its costal cartilage. It is located deep to the subclavius muscle and is often blended with the clavipectoral fascia.

Function

The costoclavicular ligament serves as the primary stabilizing factor of the sternoclavicular joint. It restricts the lateral and upward displacement of the clavicle, thus providing stability to the sternoclavicular joint.

Clinical Significance

The costoclavicular space is a potential site for thoracic outlet syndrome, a condition that can cause pain, numbness, and weakness in the arm and hand. This can occur when there is compression of the nerves or blood vessels in the space between the clavicle and the first rib.

See Also

• Clavicle
• Ribs
• Shoulder girdle
• Sternoclavicular joint
• Thoracic outlet syndrome

References

Costoclavicular Resources
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