Inferior transverse ligament of scapula

Inferior Transverse Ligament of Scapula

The inferior transverse ligament of scapula is a small but important ligament located in the shoulder region. It plays a crucial role in stabilizing the scapula and facilitating the movement of the shoulder joint. In this article, we will explore the anatomy, function, and clinical significance of the inferior transverse ligament of scapula.

Anatomy

The inferior transverse ligament of scapula, also known as the transverse scapular ligament, is a thin band of fibrous tissue that spans the posterior aspect of the scapula. It is located just above the spine of the scapula, connecting the medial border of the scapula to the lateral border. The ligament is approximately 2-3 centimeters in length and 1-2 millimeters in width.

Function

The main function of the inferior transverse ligament of scapula is to hold the scapula in place and provide stability to the shoulder joint. It acts as a bridge between the medial and lateral borders of the scapula, preventing excessive movement and rotation of the scapula during shoulder movements.

Additionally, the ligament serves as a protective barrier for the underlying structures, such as the suprascapular nerve and vessels, which pass through the scapular notch. It helps to maintain the integrity of these structures and prevent any potential compression or injury.

Clinical Significance

Injuries or abnormalities of the inferior transverse ligament of scapula can have significant clinical implications. One common condition associated with this ligament is the suprascapular nerve entrapment syndrome. This occurs when the suprascapular nerve becomes compressed or irritated as it passes through the scapular notch, often due to a thickened or hypertrophied ligament.

Symptoms of suprascapular nerve entrapment syndrome may include shoulder pain, weakness, and decreased range of motion. Diagnosis is typically made through a combination of clinical examination, imaging studies, and nerve conduction studies. Treatment options may include conservative measures such as rest, physical therapy, and anti-inflammatory medications, or in severe cases, surgical intervention to release the entrapped nerve.

Conclusion

The inferior transverse ligament of scapula is a small but important structure in the shoulder region. Its role in stabilizing the scapula and protecting the underlying structures cannot be understated. Understanding the anatomy and function of this ligament is crucial for healthcare professionals involved in the diagnosis and management of shoulder-related conditions.

For more information on related topics, please refer to the following articles:

• Scapula
• Shoulder Joint
• Suprascapular Nerve
• Shoulder Pain

References

1. Standring S. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 41st ed. Elsevier; 2016. 2. Moore KL, Dalley AF, Agur AMR. Clinically Oriented Anatomy. 8th ed. Wolters Kluwer; 2017.

3. Netter FH. Atlas of Human Anatomy. 7th ed. Elsevier; 2019.

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