Intraarticular sternocostal ligament

General Information
Latin	ligamentum sternocostale intraarticulare
Greek
TA98
TA2
FMA
Details
System	Skeletal system
Artery
Vein
Nerve
Lymphatic drainage
Precursor
Function	Stabilizes the sternocostal joint
Identifiers
Clinical significance
Notes

The intraarticular sternocostal ligament is a ligament located within the sternocostal joint, which is the articulation between the sternum and the costal cartilage of the ribs. This ligament plays a crucial role in stabilizing the joint, ensuring that the rib cage maintains its structural integrity during respiration.

Structure

The intraarticular sternocostal ligament is found specifically in the second sternocostal joint. It is a small band of fibrous tissue that connects the costal cartilage to the sternum, dividing the joint cavity into two separate compartments. This division helps in the distribution of mechanical stress across the joint during movements such as inhalation and exhalation.

Function

The primary function of the intraarticular sternocostal ligament is to provide stability to the sternocostal joint. By anchoring the costal cartilage to the sternum, it prevents excessive movement that could lead to joint dislocation or damage. This stability is essential for the proper functioning of the thoracic cage, which protects vital organs such as the heart and lungs.

Clinical significance

Injuries or disorders affecting the intraarticular sternocostal ligament can lead to pain and dysfunction in the thoracic region. Conditions such as costochondritis or sternocostal joint dislocation may involve this ligament, resulting in symptoms that require medical attention. Treatment may involve physical therapy, pain management, or in severe cases, surgical intervention.

See also

• Sternocostal joint
• Costal cartilage
• Thoracic cage
• Ligament

References

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